This freshwater spring fills with 10,000 gallons of water per minute.

This 19th-century ghost town offers a stunning view of Lake Michigan and a journey through the region's industrial past.

Large one-man sculpture park in Michigan.

The lowest point in the state of Illinois, at the confluence of the Mississippi and Ohio rivers.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

You have to love a museum with a truly dedicated focus. A focus on Superman, for example.

This odd stone memorial remembers a loyal dog who offended the rail barons with his speed and saved his master with his pee.

The residents at this Yellowstone wildlife park will certify your cooler as "bear-proof."

The heads of two giant mythological water horses honor Scotland's horselord past.

142 ceramic steps become a mosaic once a year.

This amazingly preserved Doric temple was abandoned before it was ever completed.

The world's most active stratovolcano is almost always erupting.

Thousands of well-dressed mummies below a monastery.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The celebrated eyesore created by starry-eyed sweethearts.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

Rising from the sea like a stone monster.

Medicinal spa created with the discharge from a geothermal energy plant.