This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Houses are tucked between, on, and underneath giant boulders.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

The world's oldest bookshop still in operation.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

A bar, burger joint, and arcade housed in a late 19th-century church building.

Rochester's signature culinary delicacy.

The Fox Sisters, America's leading mediums in the mid-19th century, possessed a table they claimed helped them "communicate" with the dead.

A room hidden behind a swinging shelf in the children's section.

The floor-to-ceiling collection in an old factory is a unique alternative to stuffy galleries.

A collection of the best toys ever made, The National Toy Hall of Fame is filled with kids, fun, and for some reason, a bird preserve.

The home, museum, and death site of Kodak's influential founder.

The gravestone of the suffragist leader attracted extra visitors during the 2016 election.

An old dining hall now serves up ghost stories for lusty locals.

One of the few remaining American elm trees in New York’s Tompkins Square Park was the birthplace of a new religion.

An abandoned Gold Coast-era mansion once intended for the exiled ruler of Albania, who never arrived.

The iconic Manhattan corner that was once the site of the Beastie Boys' fake clothing store.

A winding, cliffside stretch of road overlooking the Delaware River.

Comprehensive gaming collection of over 30,000 electronic games and consoles.

An unrealized dream to wirelessly electrify the entire Earth.

A Frankenstein blend of science and art allows one tree to produce 40 different types of stone fruit.

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground

The first patented shaved-ice machine heralded a snowy wonderland of iced treats at a favorite New Orleans summer shack.