San Francisco's newly reopened hands-on science museum.

Local arts organization founded in a former church.

A health museum containing a 27’’½-foot intestine.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

A museum dedicated to the history and exploration of both popular music and science fiction.

Prehistoric history as seen through the lens of an outsider artist.

Neo-cave art on the macro scale.

After the Cuban Revolution, the famous rum company had to leave their swanky headquarters behind.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

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

An ordinary pond with fish from out of this world.

Berry Gordy Jr.'s old home was the original headquarters of Motown Record Corporation.

The art museum is decorated with creatively remodeled pre-Nazi swastikas.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

Copenhagen's celebrated theme park and gardens.