360° views of the city plus five floors of optical illusions and hands-on science.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

These fantastically named natural pools look like something out of a Scottish myth.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A stunning Victorian abbey and walled garden on a lakefront.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

The ancient tomb acts as a calendar that keeps perfect time.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

A collection of intricate sculptures so small they have to be seen through a microscope.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

The same water that fills a luxury resort’s pools feeds these free hot springs in the rainforest.

A white Buddhist temple with a golden restroom.

Ho Chi Minh's perfectly preserved body has been on display here since 1975.

The notorious "Hanoi Hilton" where Vietnamese colonial subjects and later American POWs, including John McCain, were imprisoned.

Home of the unusual art of water puppetry, one of Vietnam's oldest curiosities.

Theme park featuring miniature replicas of European monuments.

Climb inside an iron crystal magnified 165 billion times its normal size.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Largest Roman Catholic church in North America.