A Sightseer's Guide to Engineering
An online guide to man-made masterpieces across America that are worth a detour.
http://www.engineeringsights.org/

A View on Cities
Offers profiles of popular landmarks and attractions in cities worldwide.
http://www.aviewoncities.com/

About.com
Places to see before you die.
http://geography.about.com/library/weekly/aa061401a.htm

American Association of Botanical Gardens and Arboreta
Search for public gardens and arboreta all over North America.
http://www.aabga.org/

Circusstuff
International directory of links to circus related web sites on the Web.
http://www.circustuff.com/links/

Circusweb
Index of American circus troupes.
http://www.circusweb.com/

City Sightseeing
The company runs hop-on, hop-off open-top bus tours in over 60 cities worldwide.
http://www.city-sightseeing.com/
http://www.guidefriday.com/

Columbus Guides
An interactive guide to unmissable tourist attractions the world over.
http://www.worldtouristattractions.travel-guides.com/

Days Out
Online guide to major tourist attractions all over the UK.
http://www.daysout.co.uk/

Days Out UK
Search for attractions and events by region.
http://www.daysoutuk.com/

DMOZ.org
Circus related weblinks.
http://dmoz.org/Arts/Performing_Arts/Circus/

Enjoy England Direct
Book attractions, theme parks, tours, days out, restaurants, coach journeys and many other things in England using the one stop reservation facility on this official tourism website.
http://www.enjoyenglanddirect.com/

Ettractions.com
Locate attractions all over North America by type.
http://www.ettractions.com/

European City Cards.com
Find out more about the city passes and discount tourist cards marketed by tourism offices across Europe.
http://www.europeancitycards.com/

Family Day Trips
A complete state-by-state listing of family-friendly day trips, plus family travel tips and travel connections.
http://www.familydaytrips.com/

Garden Visit.com
Information and maps about thousands of gardens in the British Isles, Europe and America that are open to the public.
http://www.gardenvisit.com/

Google Earth Cool Places
Aerial photos of famous or breathtaking constructions and natural attractions across the globe.
http://www.googleearthcoolplaces.com/

Google Sightseeing
See the world's greatest sights without shifting from your chair.
http://www.googlesightseeing.com/

Great British Gardens
A guide to beautiful gardens to visit in Great Britain, and places to stay nearby.
http://www.greatbritishgardens.co.uk/

Happy Mappy
Features thousands of attractions, and recreation and entertainment activities plotted on a map of the United States.
http://www.happymappy.com/

Hillman's Wonders of the World
A subjective list of the top 100 and the top 1,000 tourist attractions the world has to offer.
http://www.hillmanwonders.com/

Historic Traveler
Research, plan or book your next historical tour of America with the aid of this web resource.
http://historictraveler.away.com/

Just-Tours.net
Choose from over 4,000 sightseeing tours and activities in over 40 countries worldwide.
http://www.just-tours.net/

Mike Ashworth's Prospectors Cache
An index of locations all over the country where you can pan for gold.
http://www.tomashworth.com/

MP3 Travel
Free travel audio guides to major attractions worldwide.
http://www.mp3travel.com/

National Register of Historic Places
Online directory of significant historic places designated by the Secretary of the Interior as National Historic Landmarks.
http://www.cr.nps.gov/nr/

Places-to-Visit.co.uk
Lists attractions throughout the country by region.
http://www.places-to-visit.co.uk/

Post Office
Buy tickets in advance to theme parks and attractions in Florida, California, Las Vegas, New York, Spain and France.
http://www.postoffice.co.uk/attractions/

Real Fun Spots.com
A comprehensive search engine which lists attractions as diverse as museums and show caves all over America.
http://www.realfunspots.com/

Sightseeing.co.uk
Search for free venues in Britain.
http://www.sightseeing.co.uk/

Strictly No Photography
Forbidden holiday snaps.
http://strictlynophotography.com/

This Place I Know
Little known attractions or tourist spots all over America recommended by real people.
http://www.thisplaceiknow.com/

Travel for Kids
Highlights attractions and activities suitable for kids in popular holiday destinations around the world.
http://www.travelforkids.com/

UK Attractions.com
Search online for theme parks, museums, zoos, theatres, tours, etc.
http://www.ukattractions.com/

UNESCO-MAB
Worldwide index of biosphere reserves.
http://www.unesco.org/mab/

Vakantie Globe.nl
Plots European holiday homes and tourist attractions on a map of the region.
http://www.vakantieglobe.nl/

Via Michelin
Search online for European tourist attractions that have been recommended by the Michelin Green Guide.
http://www.viamichelin.com/viamichelin/gbr/dyn/controller/Tourism

Viator
Book tickets to attractions, theatres, events, tours and sightseeing worldwide.
http://www.shop.viator.com/

Virtourist.com
Picture and video tours of major tourist destinations and attractions worldwide.
http://www.virtourist.com/

Washington D.C.
A guide to the historic neighbourhoods and attractions in the city.
http://www.cr.nps.gov/nr/travel/wash/

Weekend Events.com
Event and attraction listings for over 70 cities nationwide.
http://www.weekendevents.com/

World Attractions Guide
Contains information on all the world's major tourist attractions organized by continent.
http://www.worldtouristattractions.travel-guides.com/

World Stadiums
A searchable database of over 8,500 stadiums in more than 200 countries worldwide.
http://www.worldstadiums.com/

Zone Tour
Index of man-made underground sites in America, Canada, France and Germany.
http://www.zone-tour.com/