The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

An exquisite tunnel of cascading flowers.

On Japan's Tashirojima Island, cats are king.

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

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

A haunted hill that supposedly defied gravity.

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

An underwater city for the dead.

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

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

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

The world's largest clay lick, where parrots gather to snack.

The mysterious "Candelabra of the Andes" could represent anything from a god's trident to a hallucinogenic plant.

These giant mummies are set ominously into a Peruvian cliffside and topped with real human skulls.

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

This scalding hot river was thought to be a myth until one geoscientist made it his quest to study the mystical waters.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

Numerous impressive carvings are embedded in the trees lining this street in Marrakech.

Rocky Atlantic beach home to a stunning stone arch.

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

Founded as a refugee camp, now a popular tourist spot.

Morocco's Argania trees are infested with nut-hungry goats.