These small stands sell Malian snacks to worshippers and passersby after Friday prayers in Harlem.

A living archive of urban activism and space reclaimed.

A hidden "place of interment for gentlemen."

Walk over a 150 year old manhole.

The center of the only hemisphere that awards visitors with a commemorative coin.

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

The end of times arrives, at least for the fish in the O.C. Fisher Reservoir.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

Berkeley Hot Springs presents to you "the only outdoor monument to presidential bathing."

This phone booth-sized municipal building has been a piece of police property for more than half a century.

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

An idle pastime becomes a record holder in Boys Town, Nebraska.

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

Two gravestones clasp hands over the religious divide.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

This unusual building straddles two countries.

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.

Self-sufficient greenhouse floating on the Hudson River.

The heroic sled dog of the 1925 serum run is preserved in taxidermy.

An odd little fishing town that is inundated by tourists looking to be locked up in a cage and surrounded by great white sharks, because why not?

An extraordinary mixture of natural beauty and man-made phenomena.

The world's most remote memorial to the victims of the UTA Flight 772 disaster.