A poignant memorial that traces two hundred years of German history.

Check the time in 145 countries at once with this East German relic.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

This massive redwood tree has stood in Northern California for nearly 2,000 years.

This old-world mansion with lush gardens is a gem in the heart of Silicon Valley.

A classically inspired temple in Redwood City.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

This sandstone mansion was the home of two of Oregon's most important pioneers.

10,000 flowered plants bloom in the City of Roses.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

These gardens recreate unique and endangered Michigan habitats.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

This impressive Boston holy house is the American mecca for Christian scientists.

Dedicated to one of the darkest moments in Irish history.

Statue commemorating the use of ether in anesthesia.

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Impossibly life-like natural history models created out of glass by a father and son.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

A cave dug by a man directed by ghosts to find pirate treasure.

Three prestigious academic collections come together to create a world-class natural history museum.