A small Second Empire-style building is one of only seven remaining lighthouses on the Hudson River.

This unusual apartment building may be Brooklyn's own version of the Leaning Tower of Pisa.

This twisty sign depicts the chain's first logo.

This unassuming alcove in London’s famous Tower Bridge once served to capture, store, and display dead bodies from the River Thames.

The "largest bathroom stall in the world" offers a unique pit-stop experience.

A tiny twin to Seattle's Fremont troll hides from the Florida sun under the Atlantic Boulevard drawbridge.

A reproduction of a giant humanoid "fossil," a hoax buried locally for construction crews to find and gain national attention.

An abandoned horticulture institute gloomily presides over rows of derelict and vine-wrought greenhouses.

A large boulder marks the place where the island of Manhattan was purportedly "sold" to the Dutch.

A beautiful, historic location open to the public.

This dilapidated castle-like structure overlooks the Hudson River at one of its widest points and was once home to nuns.

This sandstone tree trunk is a relic from a long-past era when England had a more tropical climate.

This unique library spans a mighty river.

Accessible only by boat, this centuries-old island fort never saw troops or combat.

Walk in the footsteps of the famed astronaut at Purdue University.

A ghost town in a remote corner of Oregon hosts a touching tribute to Sacagawea’s son.

The ancient sauropod tracks found in this former quarry are some of the largest in the world.

A grave dedicated to the pioneers who settled California.

An unusual snaking bank of boulders caused by longshore drift.

These structures were inspired by both Native American shelters as well as, strangely, an ice cream shop.

This unconventional used book store was once in the news for the surprising act of burning books.

Come for the giant taxidermy lion, stay for the knick knacks at this Minneapolis curiosity shop.

Located in the middle of public park, this cave built in the early19th century houses an ancient stone sarcophagus.

A distinctive monument for this former world champion takes the form of a billiards table, complete with balls and cue.