This ancient Hawaiian henge may have been an early star chart.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

Race through the maze, get your name on the sign.

Home to more than 13,000 pieces of war memorabilia and military equipment.

The fully functional, submerged Vanuatu Post Office is definitely one of a kind.

This famous city eluded concrete detection until the early 2000's.

Ancient serpentine sacrifice holder that has stood the test of time.

A marvel of Byzantine engineering under the streets of Istanbul.

Handcrafted thermal spa washes away each night with the tide.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

The platform atop this verdant volcano was built with the help of a royal elephant.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

These two delightful animal-shaped buildings host a visitor center and wool shop.

The world's only complete colossal squid specimen is on display at the Te Papa Museum.

A charmingly old-fashioned reminder of the historic building's former life.

Come for the flowers, stay for the bats!