The site of a gold-digging conquistador's bloody landing in the Americas.

One of the world’s largest and deepest freshwater springs, where mastodons once roamed.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

A 30-foot stack of piano keys memorializes one of the greatest keys players in jazz history.

One of the few places where you can explore a 1918 paddlewheel steamboat from stem to stern.

At the center of this cemetery stands a 2,000-year-old burial mound of the Adena culture.

The permanent home of Elektro, the celebrity automaton of the 1939 World's Fair.

A record-size collection of wild-haired troll dolls tells the story of the mythical creature's roots in Scandinavian folklore.

A 17th-century Shinto shrine that is home to statues of Mickey Mouse and Pikachu.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

A gleaming white tower in ornate Indian style soars above the low-slung bungalows of north Tampa.

The largest earthwork effigy in the world.

Visitors flock to see this church tower's unintended feature: It happens to resemble a giant chicken from multiple points of view.