A sewing machine tycoon built this miniature castle for the people and to beautify a lakeshore.

The oldest hotel in the world has been operated by the same family for over 1,300 years, even catering to samurai.

The oldest stone house in Paris was built by its most famous alchemist.

Mosques carved from coral and dozens of well-preserved stone structures fill this 500-year-old Swahili trading center.

This museum showcases the art of ancient sword-making.

Hidden in the hills is a mysterious stone structure, known only to a few.

People of the Plum Bayou culture built these enormous mounds over 1,000 years ago.

A museum dedicated to the history and exploration of both popular music and science fiction.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

The largest known open fault in the United States is basically a giant natural refrigerator.

Eclectic collections, artwork, and some feline friends fill the writer's former home.

A 16th-century horror show built in a lovely Italian garden.

The ruins of an 18th-century mansion that was once named "Mistake" by the man who had it built.

Sacred waters rescued from the wrath of a volcano.

This Quebec estate is home to the elaborate gardens of a self-taught horticulturist.

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

A stately castle in the northern Italian countryside has been restored after years of neglect.

The oldest dim sum restaurant in the United States is a nostalgic jewel.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

A miniature village lies nearly forgotten in the forest by the side of a major highway.

This stone was once used by druids to determine a person's innocence or guilt.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The largest cemetery for enslaved people in Loudoun County was almost lost to history, if not for the research of a minister.

This 1830s store is believed to be the site of Harriet Tubman's first stand.