This massive library holds what was once the largest book collection in the world.

France's most famous cemetery, with some of its most curious tombs.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A largely forgotten and touching neoclassical marble fountain overlooking a bear mound effigy.

The world’s largest collection of angel figurines includes 600 black angels donated by Oprah Winfrey.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

A curious sculpture garden and museum in Cochrane, Wisconsin.

Complex aquaponics systems allow fish and plants to grow in harmony.

A museum of the dime museum that features weird entertainments of yesteryear, from feejee mermaids to flea circuses.

The home of 1.5 million wood letters for printing is still a functioning workshop.

Giant six-pack could provide one person a six-pack a day for 3,351 years.

This solitary gravestone is separated from the rest in Appleton, explaining why local legends continue to surround it.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

"Iron Age" creatures fill this huckster's rusted metal sculpture garden.

Hidden away in the city of Madison, Wisconsin is a nearly forgotten home that Frank Lloyd Wright built for a childhood friend.

A house and yard adorned with bizarre concrete sculptures in a Milwaukee suburb.

This striking art museum holds an amazing series of curiosity cabinets.

The arboretum whose marshy soil sucked up the dreams of housing developers.

The world's largest collection of mechanical puzzles is a cornucopia of analog bafflers.

The world's largest anatomically accurate brain sculpture.

A lesser-known part of the Kinsey Institute is this impressive collection of art, artifacts, and material culture related to human sexuality.

This library and museum is dedicated to the life and literature of the Indianapolis native author.

Ornate limestone building now filled with geologic specimens, and more.

If astronomy had a ghost, it would look like this observatory.