The 19th-century ruins hide deep in an overgrown forest.

Home of a 28-foot tall stalagmite known as the War Club.

"A hideous albatross in the Hudson River Valley."

This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

Scene of the grisly murder of two Norwegian women in 1873.

A beautifully designed asylum was resurrected as a hotel and art center with a ghost story or two.

Adobe ruins punctuate the beauty of an 800 foot canyon carved by the Canadian River.

This 19th century mansion façade adorned with immigrant patriotism is a symbol of Louisville’s history.

Two dozen pinball games hidden away inside a most unlikely location.

Abortion, prohibition, religion, war, and fear all play a part in the history of this idiosyncratic Pacifica castle.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

What looks like a simple quaint estate in rural Pennsylvania was in the 18th century home to a small monastic community.

This great stone guardian of the forest is a relic from the land's volatile volcanic past.

Shakespeare has been brought to life in this open air theater for the better part of a century.

A plaque marks a former safe house on the secret route, now hidden next to a McDonald's.

This mysterious artificial cave has long puzzled New Englanders.

Art Deco urban decay at this historical building.

An abandoned church gets a second life as a massive beer hall and event space.

Mass graves and Victorian monuments mark the history of Memphis in this 19th century cemetery.

Industrial ruin decimated this tiny New England company town in a fashion no one saw coming… and even fewer remember today.

The world's oldest operating jazz club has been in operation since May 1934.

This protected area in Lake Huron contains some of the world’s best-preserved shipwrecks.

The century-old remains of an abandoned farm town in eastern Washington.

The cluster of boulders near Fort Irwin is covered in military insignia.