A grotesque Fiji merman dwells within this traditional Dutch-style building.

The tombstone of the founder of the lost town of Ogletown is now stuck inside a traffic median.

A Nessie-like monster supposedly lurks in this lake.

The first "Hut" was actually a small brick building.

The Bucyrus-Erie model 1850B electric shovel, or "Big Brutus," the largest existing electric shovel in the world.

This historic lighthouse was well known for the large number of women who served as its keeper.

This might just be the TARDIS of bookstores.

Descendants of this colonial Pennsylvania family still travel from far and wide to visit the 300-year-old home of their Quaker ancestors.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

Yo, Adrian!

World's first "penitentiary," meant to be humane, drove men insane.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

America's first serial killer rests in anonymity.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

The world's largest collection of fine-scale miniatures and one the nation's largest collections of antique toys.

The grandson of a Kiowa chief created what has become the iconic symbol of a city on the Plains.

Home to Hollywood history and a very special salt crystal.

The world’s largest combined collection of U.S. and Russian aircraft got its start in a poultry building.