The most accurate timepiece in the world.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

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

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

A display of magnificent stained glass windows is the first exhibit of its kind.

The site of the first battle of World War II.

Yo, Adrian!

This historic hotel invented the chocolate brownie.

A painting in the historic Cathedral Basilica depicts Jesus and his disciples dining on a traditional Peruvian menu.

This classic restaurant features a gorgeous mirror-clad room.

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

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

This stone complex marks the urban center of a lost civilization.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

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

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The interior of the Overlook Hotel in "The Shining" was based on this Yosemite original.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Real bones which are said to have belonged to a Polish dragon.