Concorde, Manchester Airport: http://www.manchesterairport.co.uk/manweb.nsf/Content/ConcordeInformation

The Hill of Crosses, Lithuania: http://en.wikipedia.org/wiki/Hill_of_Crosses

The Long Man of Wilmington: http://www.sussexpast.co.uk/property/site.php?site_id=13

The Black Country Living Museum, Dudley: http://www.bclm.co.uk/

The Scottish Crannog Centre, Loch Tay, nearish to Stirling: http://www.crannog.co.uk/

Bran castle, Romania:

• http://www.brasovtravelguide.ro/en/brasov/surroundings/draculas-castle.php

Bucharest, Romania: http://wikitravel.org/en/Bucharest

Sapanta, Romania:

• See page on wikipedia here
• Travel wiki page here
  

Boyle arts festival, Ireland : http://www.boylearts.com/

Ulster history park, Omagh BT79 7SU, Northern Ireland: http://www.tripadvisor.com/Attraction_Review-g186484-d214321-Reviews-Ulster_History_Park-Omagh_County_Tyrone_Northern_Ireland.html

Ballycastle, Northern Ireland: http://www.northantrim.com/ballycastle.htm

Glenariff forest park, Antrim, Northern Ireland: http://www.discovernorthernireland.com/Glenariff-Forest-Park-Glenariffe-Ballymena-P2825

St Patrick Cathedral, Ulster: http://www.stpatricks-cathedral.org/

Ulster American Folk Park, Ireland: http://www.folkpark.com/

A Tour of Political Murals, Belfast: http://realtravel.com/belfast-reviews-a6411384.html

Botanical gardens, Belfast: http://www.belfastcity.gov.uk/parksandopenspaces/parksdetails.asp?id=54

Newgrange, passage tombs, County Meath, Ireland: http://en.wikipedia.org/wiki/Newgrange

The Mourne Mountains: http://www.mournemountains.com/

Banksy tour of London: see this book

Newby Hall and gardens, Ripon: http://www.newbyhall.co.uk/

Fjords, Norway: http://www.fjordtravel.no/

Lost Word, Venezuela: http://www.tvguide.com/tvshows/real-lost-world/284880

City of Petra, Jordan: http://en.wikipedia.org/wiki/Petra

Escomb Church, Bishop Auckland in County Durham.: http://www.escombsaxonchurch.com/

The Hollow Mountain, Scotland: http://www.visitcruachan.co.uk/

CairnGorm Mountain Railway: http://www.undiscoveredscotland.co.uk/aviemore/funicular/index.html

A Hindu temple

Stirling Castle: http://en.wikipedia.org/wiki/Stirling_Castle

Rosslyn Chapel: http://www.rosslynchapel.org.uk/

The Royal Yacht Britannia, Edinburgh: http://www.royalyachtbritannia.co.uk/

Scottish National Gallery of Modern Art: http://www.nationalgalleries.org/visit/page/2:118:4

Foyers Falls:

• http://walking.visitscotland.com/walks/westhighlands/214050
• http://www.lochnesswelcome.co.uk/gallery/images.asp?theimageid=27

M&D's Scotland's theme park: http://www.scotlandsthemepark.com/

Royal Botanic Garden: http://www.rbge.org.uk/the-gardens/home

Edinburgh festival : http://www.eif.co.uk/

Distillery tour: http://www.visitscottishheartlands.com/whisky/tours.html and http://www.scotlandwhisky.com/distilleries/

Glasgow Science Centre: http://www.glasgowsciencecentre.org/

Culzeane Castle: http://www.culzeanexperience.org/

Think Tank, Birmingham, Science museum: http://www.thinktank.ac/

Salts Mill, Bradford: http://www.saltsmill.org.uk/

Blenheim Palace, Oxford: http://www.blenheimpalace.com/

Tortworth Chestnut, Tortworth, Gloucestershire: http://www.kew.org/newviews/adventures/tree_chestnut2.shtml

The British Library: http://www.bl.uk/

The Museum of Science and Industry, Manchester: http://www.msim.org.uk/

Armley Mills, Leeds: http://www.leeds.gov.uk/armleymills/

St Michaels Mount, Marazion, Cornwall: http://www.stmichaelsmount.co.uk/

Gorton monastery, Manchester: http://www.gortonmonastery.co.uk/

Manchester Climbing Centre, Manchester: http://www.manchesterclimbingcentre.com/

Manchester Jewish museum, Manchester: http://www.manchesterjewishmuseum.com/

Sienna Spa at Radisson Edwardian, Manchester: http://www.radissonedwardian.com/sienna

Victoria Baths, Manchester: http://www.victoriabaths.org.uk/

Chinese Arts Centre, Manchester: http://www.chinese-arts-centre.org/

IMAX at Manchester: http://www.odeon.co.uk/fanatic/imax/

Magna, near Sheffield: http://www.magnatrust.org.uk/

Cadbury World, Bournville: http://www.cadburyworld.co.uk/

Buckfast Abbey, Near Exeter: http://www.buckfast.org.uk/

Delabole Slate Quarry, Delabole, Cornwall: http://www.delaboleslate.co.uk/

Glendurgan Garden, near Falmouth, Cornwall: http://www.nationaltrust.org.uk/main/w-vh/w-visits/w-findaplace/w-glendurgangarden/

The Hurlers (Stone circle) and Cheesewring, Liskeard, near(ish) Plymouth: http://www.connexions.co.uk/culture/html/stones.htm

Goodhilly Downs, the lizzard peninisula, Cornwall: http://www.goonhilly.bt.com/
The book I read branded this "The worlds largest satelite station"

Quarry Bank Mill, Manchester: http://www.quarrybankmill.org.uk/

B of the bang, Manchester: http://www.bofthebang.com/

Cruckley, Driffield: http://www.cruckley.co.uk/index.shtml

Pendennis Castle, Falmouth, Cornwall: www.english-heritage.org.uk/pendennis

Beverly Minster, Beverly: http://www.beverleyminster.org/

Bristol: http://visitbristol.co.uk/
I havn't thought about going here before, but it does look like it has some interesting things to do....

Smeatons Tower (light house), Plymouth: See here

Tour of Plymouth Naval base: http://www.royalnavy.mod.uk/server/show/nav.5520

Sherwood Forest, Nottinghamshire: http://en.wikipedia.org/wiki/Sherwood_forest

The Major Oak, Sherwood Forest, Nottinghamshire: http://en.wikipedia.org/wiki/Major_Oak

www.church.co.uk, Kennington Road, London

Sagrada Familia, Barcelona, Spain: http://www.greatbuildings.com/buildings/Sagrada_Familia.html

Ground Zero, New York: http://groundzero.nyc.ny.us/

Crealy Great Adventure Park, near Exeter: http://www.crealy.co.uk/cornwall_pages/park_tour.aspx

Maybe somewhere to go if we do make it down there with "the kids"

Terracotta Warriors: http://www.terracottawarriors.co.uk/

Urbis Exhibition centre, Manchester City Centre: http://www.urbis.org.uk/

Pennine Way, Yorkshire: http://en.wikipedia.org/wiki/Pennine_Way

Iona, Scotland: http://www.isle-of-iona.com/ and also the Iona Community there: http://www.iona.org.uk/

York cold war bunker: http://www.24hourmuseum.org.uk/leeds/news/ART35073.html and http://www.yortime.org.uk/yortime/asp/groupdetails.asp?groupid=1385

The Deep, Hull: http://www.thedeep.co.uk/

The Palace of Westminster: http://en.wikipedia.org/wiki/Palace_of_Westminster

Castle Howard: http://www.castlehoward.co.uk/

I've been around the gardens several times, but I've never been in the house - maybe I should get around to it one day!

Tintagel Castle, Cornwall: http://www.english-heritage.org.uk/server.php?show=conProperty.316

I visisted this in about 1994

The Humber Bridge, Hull: http://www.humberbridge.co.uk/

Greenbelt, Cheltenham: http://www.greenbelt.org.uk/

Niagra Falls, USA / Canada: http://www.infoniagara.com/

Chatsworth house, near Bakewell, Derbyshire: http://www.chatsworth.org/

Selby Abbey, Selby: http://www.selbyabbey.org.uk/

Van Gogh Museum Amsterdam: http://www.amsterdam.info/museums/van_gogh_museum/

National Mueseum of modern art, Amserdam (Stedelijk Museum): http://www.stedelijk.nl/oc2/page.asp?PageID=137

Foam Fotografiemuseum, Photography museum, Amsterdam: http://www.foam.nl/index.php?pageId=12

Pinakothek der Moderne, Munich: http://en.wikipedia.org/wiki/Munich

Baltic Centre for contemporary art, Newcastle: http://www.balticmill.com/

Go to a Natural Spa in Iceland: http://www.arctic-experience.co.uk/naturalspa/

The Empire State building, New York: http://www.esbnyc.com/

The Labyrinth at Willen Park, Milton Keynes: http://www.mkweb.co.uk/Art/DisplayArticle.asp?ID=474

Auschwitz concentration camp, Poland: http://en.wikipedia.org/wiki/Auschwitz-Birkenau

Aerospatiale aerospace factory tour, Toulouse: http://www.bbc.co.uk/holiday/destinations/france_toulouse/

Spurn Point, The River Humber, Hull: http://www.spurnpoint.com/

Ingleton Waterfalls, Yorkshire Dales: http://www.ingletonwaterfallswalk.co.uk/

Castleton, Derbyshire: http://www.derbyshireguide.co.uk/travel/castleton.htm

Eco Centre, West Wales, SA42 0TS : http://www.ecocentre.org.uk/

Rudston Monolith, Rudston, Near Bridlington: http://en.wikipedia.org/wiki/Rudston_Monolith

Toronto, Canada: http://www.torontotourism.com/visitor

Tenby, South Wales: http://www.bbc.co.uk/wales/southwest/webguide/pages/tenby.shtml

Groningen, North Holland: http://en.wikipedia.org/wiki/Groningen_(city)

Bintulu, Malaysia: http://en.wikipedia.org/wiki/Bintulu

The Guinness Storehouse, Dublin: http://www.guinness-storehouse.com/

Holy Island, Lindisfarne, Northumbria: http://www.lindisfarne.org.uk/

The Nothern Lights: http://en.wikipedia.org/wiki/Aurora_%28astronomy%29

York Minster, York: http://www.yorkminster.org/

Museum of Army Transport, Flemgate, Beverley: http://www.4wdonline.com/Museums/Beverley/MuseumArmyTransport.html

The Science Museum, London: http://www.sciencemuseum.org.uk/.
I have been here once, but I'd like to go back again!

The Thackray, medical museum, Leeds: http://www.thackraymuseum.org/

Bath: http://visitbath.co.uk/

The Tate, St Ives: http://www.tate.org.uk/stives/

Scafell, Wastwater: http://images.google.co.uk/images?svnum=10&hl=en&lr=&q=Scafell%2C+wastwater

London tower bridge: http://www.towerbridge.org.uk/TowerBridge/English

Rievaulx Abbey, Helmsley / Thirsk: http://en.wikipedia.org/wiki/Rievaulx_Abbey

Sellafield Nuclear power station, Cumbria: http://www.sellafield.com/section.php?pageID=3

Brimham Rocks, Harrogate: http://www.brimhamrocks.co.uk/

Caldey Island, Wales, Tenby: http://www.caldey-island.co.uk/

Centre for Life, Newcastle: http://www.life.org.uk/

The Cabinet War Rooms, Westminster, London: http://cwr.iwm.org.uk/

Beamish, County Durham : http://www.beamish.org.uk/

CN tower, Toronto: http://www.cntower.ca/

Tour Scotland in a Campervan / Motorhome: http://www.visitscotland.com/

Eureka, Halifax, West Yorkshire: http://www.eureka.org.uk/

Rome, Italy: http://en.wikipedia.org/wiki/Rome

Egypt: http://www.visit.egypt.travel/main_frame.php

Caernarfon castle, Snowdonia, North Wales: http://www.castlewales.com/caernarf.html

Snowdon, North Wales: http://www.snowdonrailway.co.uk/

The Grand Canyon, Arizona: http://en.wikipedia.org/wiki/The_Grand_Canyon

Black Sheep Brewery tour, Masham, Yorkshire dales: http://www.blacksheepbrewery.com/visitors/tours.cfm

Alton Towers, Staffordshire: http://www.altontowers.com/resort/

Munich, Germany: http://en.wikipedia.org/wiki/Munich

Vatican city, Rome: http://www.vatican.va/

Statue of Liberty, New York: http://en.wikipedia.org/wiki/Statue_of_Liberty

Slayley Hall, Near Hexham, Northumbria: http://www.devere.co.uk/Hotels/Slaley/

We've just got back from 2 nights durring the Christmas break - well worth the money!

Rio De Janeiro, Brazil: http://en.wikipedia.org/wiki/Rio_de_Janeiro
Note sure I like the idea of going to a place with such a reputation for crime, however, it does look good.
I do like the ideas of seeing the statue of Christ the Redeemer

Harewood house, Leeds / Harrogate: http://www.harewood.org/

National Coal Mining Mueseum, Wakefield: http://www.ncm.org.uk/

The geysers at yellow stone park, Wyoming, USA: http://www.nps.gov/archive/yell/oldfaithfulcam.htm

2012 Olympics, London: http://www.olympic.org/

Castle Howard, Malton, North Yorkshire: http://www.castlehoward.co.uk/
I've been around the gardens on several occasions but I've never been in the house.

Lincon Cathedral, Lincon: http://www.lincolncathedral.com/

Notre Dame, Cathedral, Paris: http://en.wikipedia.org/wiki/Notre_Dame_de_Paris

The National Museum of photography film and television, Bradford, Leeds: http://www.nationalmediamuseum.org.uk/

BBC Television Centre tour, London: http://www.bbc.co.uk/tours/tvc.shtml

Kielder water, Northumberland: http://www.kielder.org/

Washington DS, USA: http://www.washington.org/

Do the Coast to Coast: http://www.coast2coast.co.uk/
Realistically, I'd probably have to bike it rather than walk it.

Kilburn White Horse, near Sutton Bank / Thirsk: http://en.wikipedia.org/wiki/White_Horse_of_Kilburn

Stonehenge, Salisbury: http://www.stonehenge.co.uk/

Byland Abbey, Hemsley / Thirsk: http://en.wikipedia.org/wiki/Byland_Abbey

The Tate Modern, London: http://www.tate.org.uk/modern/

The Tate, Liverpool: http://www.tate.org.uk/liverpool/

Walk the Pennine Way: http://www.thepennineway.co.uk/

Edinburgh Military Tattoo: http://www.edintattoo.co.uk/

Iona: http://www.iona.org.uk/

Chester zoo, Chester: http://www.chesterzoo.org/

The Merseyside Maritime Museum, Liverpool: http://www.liverpoolmuseums.org.uk/maritime/

The Imperial War Museum, London: http://london.iwm.org.uk/

The Comedy Store, Manchester : http://www.thecomedystore.co.uk/

Hack green Nuclear Bunker, Nantwich, Cheshire: http://www.hackgreen.co.uk/

The Eden Project, Austell, Cornwall: http://www.edenproject.com/

The Imperial War Museum North, Manchester: http://north.iwm.org.uk/

The Lowry, Manchester: http://www.thelowry.com/

Think Tank, Birminghams museum of science: http://www.thinktank.ac/

The Royal Airforce Museum: http://www.rafmuseum.org.uk/ (when the cold war exibit opens)

The Royal Shakespeare Company: http://www.rsc.org.uk/

Jodrell Bank Visitors Centre: http://www.jb.man.ac.uk/viscen/

The Yorkshire Air Museum, Elvington, York: http://www.yorkshireairmuseum.co.uk/

The Giants Causeway, County Antrim, Northern Ireland: http://www.giantscausewayofficialguide.com/

The Yorkshire Airshow, Elvington: http://www.elvington.org/

The Royal Opera House, Covent Garden, London : http://info.royaloperahouse.org/

Yorkshire Sculpture Park, West Bretton, Wakefield: http://www.ysp.co.uk/

The Great Yorkshire Show, Harrogate : http://www.greatyorkshireshow.com/