This Oakland fairytale kingdom, fiercely devoted to childlike whimsy, was an early inspiration for Disneyland.

An extraordinary collection of vampire-themed antiques lurks on the second floor of a store.

66,000 pieces of art, donated by one of the world's richest men.

The only castle in North America to ever house European sovereigns.

The unique collection often goes unnoticed by visitors focused only on the archaeological objects.

A trompe-l'oeil statue honoring the first guide dog in North America.

This magnificent herd of stampeding elephants has been frozen in time for over a century.

An underground magnet for ever-changing street art.

Seven people are buried in the middle of what's now a movie theater parking lot.

An allegedly cursed tree represents a town's reckoning with a racist past.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

This ancient market is often referred to as the oldest shopping mall in the world.

Edison's cast-in-place concrete houses were a failure, but way ahead of their time.

Once the world's largest reinforced concrete structure, this abandoned bridge now beckons urban explorers.

This stone complex marks the urban center of a lost civilization.

A unique sculpture park that specializes in the huge and bizarre.

These mystical miniature houses bring a touch of magic to the New Jersey woods.

The world’s first penitentiary, meant to be humane, drove men insane.

This tiny New Jersey village has lived many lives but seems determined to remain a ghost town.

One of the world's largest model railroads is a mind-boggling achievement.

American involvement in World War I officially ended in 1921 in New Jersey, three years late and thousands of miles from the battlefield.