This sublime architectural marvel is a rare example of an expressionist church.

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

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

Copenhagen's celebrated theme park and gardens.

Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

An old Danish political institution where members of government can grab a drink off the record.

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

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

This wooden hotel is a temple to German sustainability and forest conservation.

Executed in 1401, Exhumed in 1878, Stolen in 2010.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

Hamburgers are intensely proud of their tunnel beneath the river.

This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

The remains of a hospital ravaged by fire, once a progressive place of innovations for disabled children.

The Mysterious Witch Bonney, a haunted statue in an old industrial city.

Supposed Massachusetts Grave of a pre-Columbus Knight Templar.

A lake formed in the basin of a massive impact crater takes the shape of an unbroken ring when viewed from above.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

Radical Bookstore and Community Space.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

The most photographed house in Maine looks good enough to eat.