Manhole covers meticulously catalogued

The ultimate manhole covers website features 8107 different covers, from 63 countries and 576 cities, yet is far from complete.

Under the city's surface there is an underground city, a city that its only purpose is to serve the upper city. In this city there are miles of tunnels, sewerage pipelines, communications lines etc. The manhole covers in this site are the bridge between the upper and lower city and come in various shapes, sizes, writing and graphics.