The natural hot spring that was integral to the creation of Canada's first national park.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

FDR hoped to find a cure for polio in this Georgia town's warm springs.

After being inoperative for over half a century, this elaborate fountain in Atlanta's oldest park was restored to its former glory.

A grassroots community effort in the 1970s led to the creation of this beautiful garden full of delightfully whimsical exhibits.

This angular brutalist playground turns playtime into modern art time.

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

If you ever wanted to own an actual piece of Disney World, this is the place to shop.

This grand Spanish-Cuban restaurant has been serving customers for more than a century.

A Florida college boasts the world's largest single-site collection of structures designed by Frank Lloyd Wright.

The remnants of the base where US Army troops learned how to fight in extreme conditions.

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

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

A bizarre roadside attraction and the first instance of miniature golf in the world.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

This impeccably preserved farmstead is a time capsule of a Pulitzer Prize-winning novelist's life.

The world's largest occupied bat houses hold hundreds of thousands of flying mammals.

In Florida, these naughty monkeys live on their own mini-monkey Alcatraz.

A luxuriant botanical garden below sea level.

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

A haunted hill that supposedly defied gravity.

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