The Well-Trodden Art of the Manhole Cover in New York City

http://static.neatorama.com/images/2013-03/teleport-manhole-...

I'm standing directly on it but it's not doing anything...

Some pictures of London coal plates here: https://twitter.com/hashtag/opercula?src=hash

They gained some brief national attention in Britain (at least among those who follow politics) when Jeremy Corbyn was revealed to be a fan. See: http://www.telegraph.co.uk/news/politics/Jeremy_Corbyn/11867...

So many designs! Not as collectible as POGs, but nearly as varied. And probably hard to display in a bar - have to use reinforced wall mounts (they weigh 300 lbs).

136kg

Too bad this classic is down: http://www.drainspotting.com

Loved the "MADE IN CHINA" one.