California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

A sculpture dedicated to Napa Valley's oldest mineral water company.

This underground cave located in the most barren reaches of Idaho is filled with ice year-round.

At this California chicken ranch, four bucks will get you 18 eggs and a chorus of dancing animatronic poultry.

The Internet Age began with a transmission from this biker bar.

Successful artist residence program has filled this ranch with dozens of sculptures over the years.

Elephant seals and sea lions have turned the abandoned buildings on this island into their endangered love shack.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

In the early 1800s, surgery was also a show.

A layered tribute to the work of mosaicist Isaiah Zagar.

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

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

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

A tiny, unmarked beer and whiskey bar above an Ethiopian restaurant in West Philly fails to conceal live bluegrass.

Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

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

The longest covered bridge in Delaware.

These ruins of an octagonal stone school that was later used as an A.U.M.P. church exemplify a popular school design from the 1830s.

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

This might just be the TARDIS of bookstores.

This local gem houses the largest collection of pre-Raphaelite paintings outside of the U.K.

A drab two-story office space in Delaware is a hidden tax haven for Hillary Clinton, Donald Trump, and over half the Fortune 500 companies.

This weeping, 10-foot-tall sculpture was a maquette for a 9/11 memorial.

This collection of odd proofs of concept is like taking a walk through the imagination of a Victorian engineer.