You must be one special person or set of people to collect manhole covers or pictures of them. But when these manhole covers are from Japan you should expect them to be a little different from the ordinary, and trust me they are:
More picture sources
Okachin Manhole Cover Gallery
Flickr Pool ï¿½ Japanese Manhole Covers
Design Manhole Collection
Kyoto Manhole Covers
hi5 to pick tentacle where I saw these pictures first.
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