The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

An eatery within the Minneapolis American Indian Center writes colonial ingredients out of the story of Native American cuisine.

San Francisco's newly reopened hands-on science museum.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

Only hotel where you can legally launder money.

A huge musical instrument played by the ocean.

The house that birthed The Old Man and The Sea is now a museum devoted to the old man who wrote it.

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

Neo-cave art on the macro scale.

Quite simply the largest tree in the world (by volume).

Manhattan's Thirteenth Avenue was made on landfill then deliberately destroyed — apart from one small, obscure block.

Elevated freight railway turned wildly successful urban park.

In the town of Třeboň, carp is king.

600 stumps, branches, and trunks of different shapes and sizes.

This network of conjoined cellars was riddled with traps and supposedly allowed the townspeople to pretend their homes were deserted.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A museum dedicated to the exploring past, present, and future innovations.

No one's quite sure where this quirky university tradition originated.

This iconic water tower and failed bandstand is open for panoramic views once a year.

This unusual subway stop was originally a real estate office.

This innocent-looking townhome is actually a subway exit.

A whimsical, punny collection of "fence art" outside the tiny mountain town of Baker, Nevada.