A Circus legend leaves an unexpected endowment.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

A tribute to Ponce de Leon's supposed quest for eternal youth.

Intertwined, interspecies trees which locals believe can grant boons to lovers.

Manatees congregate around a power plant's discharge canal where the water is especially warm.

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

A building so large that it has its own weather.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

More than 5,000 contemporary and "historic" mustards from around the world.

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

A bizarre house filled with an astounding array of collections.

This cave holds a surprisingly colorful variety of geological oddities.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.