A lover's walk between hilltop towns, decorated with graffiti love notes.

A medieval weapon rumored to have been used by the brilliant poet himself.

100 year tradition of fist fights, marked by marble footsteps.

Five candy-colored villages on the Italian Riviera.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Only hotel where you can legally launder money.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

A man-made island in scenic San Francisco Bay.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Weighing 30,000 pounds, this monument represents Detroit's first industrial era.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

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

Opulent downtown movie theater now houses cars as an indoor parking garage.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

Located on Guam's south shore, this small cave is named for an ancient and powerful Chamorro Chief.

Launchpad for the US military’s dead mouse operation to battle millions of snakes.

The underground hideout of a Japanese soldier for whom World War II ended in 1972.

The pits used to load the nuclear bombs onto the aircraft that dropped them over Hiroshima and Nagasaki at the end of World War II.

The quintessential Japanese rock garden has existed for more than 500 years.

A bronze statue dating back as far as 1252, still has remnants of gold on its right cheek from ancient gilding.

Once a black market electronics marketplace, now an otaku shopper's paradise.

A mysterious castle built as a monument to lost love.

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