This beautiful vintage movie palace has seen little change in form or function since the 1920s.

Under a playground is a little-known sealed train tunnel that likely contains the bodies of workers trapped by cave-ins.

Buy your fish and have it cooked to order in this bustling, eight-floor seafood market.

Home to more than 13,000 pieces of war memorabilia and military equipment.

About as hidden as can be, this specialty coffee shop is wedged between multi-story buildings at the end of a dark, skinny alleyway in Seoul.

Step into a cartoon at this Seoul café that aims to evoke a two-dimensional scene.

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

Wedged between two sets of row houses is an awkwardly located family graveyard.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

New Zealand's epic shrine to all things puzzling.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

This strange geological landscape erupts with sudden bursts of water.

Known for the tunnel that leads visitors to the water.

The glacier tucked within a New Zealand rainforest.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

Tubing through a cave lit with glowworms is a magical underground experience.

This university transit system is a 1970's vision of the future.

Once the most painted on object in the world, this short campus fence is well on its way to being so again.