A giant 400-acre preserve in North Florida for displaced wolves.

The scuba diving training facility was named for the steam that rises from the cave's chimney.

Where manatees are the snowbird vacationers in these balmy Florida springs.

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

A mysterious castle built as a monument to lost love.

An underwater city for the dead.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

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

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

Singapore's landscaping project is home to 18 incredible Supertrees.

The burial grounds of a secret society includes fences topped with fake Tesla balls.

Hidden high on a remote mountain peak is a humbling and mysterious Vietnam War memorial.

The remains of an early 1900s dude ranch that operated until the 1970s.

This otherwise unremarkable ski town building marks the site of Butch Cassidy's first robbery.

The site where a nuclear bomb was lowered over 8,000 feet underground and detonated as an experiment in natural gas extraction.

A stark reminder of the huge nuclear weapons plant that once stood on the site and its effect on the surrounding area.

A fake mine that was made using real mining techniques which is also used as a community center.

Possibly the world's only drive-in movie theater with an attached motel.

Metal water storage tank turned ethereal concert hall.

Once an unstoppable source of gold and silver, this town came to a grinding stop when the groundwater proved deadly.

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

The largest dinosaur trackway in North America is tucked away among this canyon's ghosts and archaeological gems.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.