The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

See massive fossils that are over 200 million years old in northeastern Arizona.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

A modernist landscape of water and sci-fi concrete.

One part antique store, one part curiosities hodge-podge.

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

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The celebrated eyesore created by starry-eyed sweethearts.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

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

This blowhole is supposedly caused by a trapped monster.

Hear the quietest sound from across the dome.

Pop culture has helped to keep this iconic British building from being destroyed.

Breathtaking and huge 430 year old maps of Italy.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

The modern birthplace of Irish freedom.

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

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Tracks near this Texas nature site were once thought to support the Creationist belief that man and dino coexisted.