A gregarious Ohio resident has been building his whimsical temple to peace for decades.

A slab of sandstone covered with mysterious 1,000-year-old rock carvings from a vanished North American culture.

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

This presidential tomb was not dedicated until years after Harding's death due to personal controversy.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

Ruins of a Carnegie family mansion on Cumberland Island.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

Location of a reliquary containing bone fragments of 18 saints.

Japan's largest and oldest annual procession of floats, begun in 869.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

Nonprofit art center that promotes outsider, intuitive, and self-taught art.

A beloved Chicago music venue offering cold beer and lots of “Friendly."

What was once the second largest steel mill in the US is now a sprawling complex of modern ruins.

The famous author's birthplace is preserved in a town that he once described as narrow-minded.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

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

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This grand old 80-foot sequoia towers above the buildings in the city’s retail center.

The final resting place of one of the most sensational guitar players of all time was created only after his father got the rights to his music.

A six-story-tall golden pyramid, surrounded by a moat.

A piece of outsider public art accompanied by a strange urban legend.

The body of an unidentified woman, visible through a glass coffin, was discovered by accident.