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.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

A rare view of a preserved Victorian science museum.

Arlington Cemetery exhibit dedicated to death and grieving.

This museum boasts a bucket of teeth and tells the tale of a 20th-century dental circus.

A train station that was abandoned by the coal industry and was later converted into a cocktail bar.

A beautiful Victorian-era cemetery, complete with a miniature village.

The bears may be gone, but their old cages can still be found.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

Trash escaped from a landfill to fill beaches with all kinds of treasure.

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

Impossibly life-like natural history models created out of glass by a father and son.