A German apartment building hosting as many trees as human occupants.

Somber memorial to the May 10, 1933, book-burning which took place on this spot.

The door to the museum holds a unique artifact from the Finnish Civil War.

This church also serves as a lighthouse complete with a beacon.

A city's controversial tribute to its founder depicts townspeople flashing their bare behinds.

Germany's last remaining Lenin statue has become a lightning rod of debate about the country's divided past.

Seventeen members of the local royal family are interred in this Baroque church in northern Germany.

Eight naturally mummified bodies in glass coffins are housed in an underground crypt.

A stunning gilt bronze relief denounced by Hitler as "degenerate art"—even though it was dedicated to the Nazi leader.

Böttcherstraße's bells, extolling Nordic virtues and the great conquerors of the world.

A spitting ode to a German serial killer.

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

Twelve sweet, nutty, life-sized statues are housed in this second-story shrine to almond paste.

A tilted half-timbered house from 1672 is built into a salvaged segment of a medieval wall.

A stunning two-story timepiece within a medieval Brick Gothic church.

Dancing skeletal figures pay homage to a medieval mural destroyed during World War II.

The bells remain in a shattered heap exactly as they fell when the church was bombed in World War II.

A statue honors the local legend that the devil helped build St. Mary's church after being tricked into thinking it was going to be a wine bar.

The small alleys in Lübeck's Old Town are a result of medieval urban sprawl.

"There's nothing there," and other lies the KGB told us.

Only a fragment of this 15th-century Dance of Death survives today.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

An ancient Viking runestone hidden in plain view in Stockholm's old town.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.