Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

The largest source of fossilized insects anywhere.

Specimens collected by the author of "Lolita" and self-taught lepidopterist are exhibited in his childhood home.

Tubing through a cave lit with glowworms is a magical underground experience.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

This little-known, 35,000-specimen collection in Greece is a lepidopterist's dream.

Nicknamed the "Museum of Horrors," this French anatomical collection has been fascinating visitors for over a century.

Astonishing collection of helmets, scientific instruments, and medical models.

A colossal sculptural lion built by the same man who designed the Statue of Liberty.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

This unique Lady Liberty is one of the only examples of the figure sitting down.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

North America's oldest quarantine facility was built in response to Philadelphia's 1793 yellow fever outbreak.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

A complicated, forgotten beacon of hope for thousands of immigrants, "Canada's Emerald Isle" lies in ruin.

Whale bones, scrimshaw, and sperm oil make up just a part of this comprehensive collection of whaling history.

Europe's only museum solely dedicated to the history of whaling still has a fully-functioning whaling ship.

For 20 years, this whale skeleton has been slowly dripping oil on the floor of the museum where it hangs.

This Ukraine alleyway has become its own little island of forgotten things.

Ride the subways of yesteryear.

Sniff the Titan Arum's rotting flesh.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A popular European tradition makes its way to the states on one of America's most famous bridges.