Only known mainland rookery of the threatened Stellar sea lion.

On the Oregon coast there is a natural hole that seems to be draining the sea.

Home of Howard Hughes' Spruce Goose.

The world's longest known cave system.

Prehistoric animals decorate this popular outdoor park.

One of the few surviving "Wigwam"-themed motels.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

This museum dedicated to an oft-overlooked support industry features a surprisingly moving brass diorama of a man being saved from a sinking car.

A bizarre roadside attraction and the first instance of miniature golf in the world.

What better place to take a seat?

Bizarre Cavern.

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.

An outlandish shoe shaped house built by an eccentric millionaire.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

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

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

The land is home to swimming ponies and a legendary 18th-century treasure.

The Decoy Capital of the World.

Home to items never before seen by the public.

An astounding collection of medical specimens, including bits of President Lincoln.

Meet some of the most prominent figures in Black history through life-sized wax models.

The trials and tribulations of marking Poe's grave.

George Washington's dentures and Queen Victoria's dental instruments are in the nation’s official museum of the dental profession.