This New Orleans tree is filled with hidden chimes that produce a carefully tuned melody.

This former industrial site has transformed into a community sculpture garden that hosts monthly Full Moon parties.

Detroit’s Eastern Market has been transformed into an outdoor museum with colorful murals that address social issues and symbolize the city.

The world's oldest operating jazz club has been in operation since May 1934.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

This once-grand marvel of engineering is now 41 miles of scenic hiking trail.

An eccentric German artist built this weird and wondrous castle packed with shocking sculptures and alien art.

The oldest colonial fortress in the Americas was once the home and later prison of Christopher Columbus.

This hidden sculpture garden full of Wild West art is one of San Antonio's best-kept secrets.

A 131-year-old wunderkammer of Texas history.

San Antonio's first 3-D stereoscopic mural is a trippy treat for the eyes.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

Cryptid lake monster honored with its own monument.

A white oak with property rights.

An underwater city for the dead.

The skeletal white beams stand as a monument to religious dissent.

Finally, you don't have to be a pious Swedish seaman to relax like one.

This 19th-century church is now a popular roller rink.

In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

An eatery within the Minneapolis American Indian Center writes colonial ingredients out of the story of Native American cuisine.

One of the last remnants of the city's Chinese nightclub scene is now a dive bar selling killer mai tais.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.