This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

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

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

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

The legendary building that needed ghostly approval before being built.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

An emerald-green grotto just a short trip from Austin.

A 140-year-old castle with underground caves hidden in San Francisco.

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

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

An artsy hidden staircase leads to breathtaking views of San Francisco.

This collection of over 50 classic pinball machines awaits visitors to downtown Roanoke.

The resting place of a Civil War celebrity's amputated limb.

America's first public mental health facility.

A small Richmond island dotted with the remnants of hundreds of years of history.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

The skeletal white beams stand as a monument to religious dissent.

An original apothecary from 1792.