This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

A unique sculpture calls the outside of this steakhouse home.

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

This 700-year-old street food market features baby octopus and soy donuts.

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

Not quite the menace it once was, this monster still has some chops.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

The land is home to swimming ponies and a legendary 18th-century treasure.

This lovely tree was a thank you gift from the man known as "Public Enemy No.1."

The childhood home of the Sultan of Swat is just a line drive away from Oriole Park at Camden Yards.

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

Once America's tallest structure, now a Baltimore landmark.

A museum dedicated to exhibiting remarkable outsider art.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

The trials and tribulations of marking Poe's grave.

Legend has it that not even Stalin could pull down the 2015 European Tree of the Year.

Inside this medieval church resides a unique set of murals.

This dizzying tower was built to better broadcast the 1980 Moscow Olympics.

The Guardian of Tallinn.

This abandoned fighter jet launch center is now a haunting street racing course.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.