A folk art mecca famous among outsider art fans.

This Bangkok high-rise looks like a rudimentary LEGO elephant.

The first spinning jail built in the United States is the only one that still turns.

In an alley not far from where two great highways meet, byways of a very different sort are honored.

The world's largest covered wagon is piloted by a giant Lincoln lawyer.

A bronze of the man in all his sinewy glory celebrates his longtime connection to the Ohio city.

The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

The building is topped by a Statue of Liberty statue whose torch has stayed burning since the museum opened.

Hop on the train and tour an elaborate miniature town made completely of junk (including the train).

Two insane asylum bodies embalmed by an amateur.

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

If astronomy had a ghost, it would look like this observatory.

America's first public mental health facility.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

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

This Indiana walk of fame honors music legends with record-shaped plaques in the pavement.

This historic hotel invented the chocolate brownie.

The only diamond mine in the world where you can keep what you find.

A modern-day wunderkammer dedicated to Indianapolis history, Afrofuturism, and musical vibrations.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

This unassuming home was once “grand central station” for the Underground Railroad.

Once home to a booming 19th-century oil town, the park now houses a World War II submarine memorial complete with a torpedo.