French manhole covers (french and english)
A very complete website about manhole covers. Photographs, historical and technical information, and some pages about manhole covers in comics.
A norwegian collection of manhole covers. Fortunately, there is an english translation !
Sewers of the world, Unite ! (english)
The widest collection of photographs of manhole covers on the web. More than 2000 pictures from many countries on this russian website.
Manhole covers and other cast iron works (english)
A collection of manhole covers from Hungary and the rest of the world (on the web archive because the original site is gone).
Ruavista - Regards de chaussée de Londres (french)
An interesting article about London manhole covers with a good collection of photographs.
Roland Muhler Photography (english)
Website of a german photographer, Roland Müler, containing beautiful photographs of manhole covers.
Dan Heller's Photo Gallery (english)
A very nice collection of photos of manhole covers of the world by Dan Heller.
The History of Sanitary Sewers (english)
All you've always wanted to know about sewers...
What does the city hide ? What is there beneath the covers or behind the doors ? The answer may be somewhere on this website.
Coalition Against Vivisection (french and english)
This website is about something completely different. It is the website we are working on now. It is about modern scientific methods not using animal experimentation.