An imperial church bombed to ruins during WWII now stands as a jagged memorial.

The original burial place of this preeminent 18th-century Jewish philosopher was razed by the Nazis.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

Metro station with a claim to rock n' roll fame.

A brush maker used his factory to protect blind Jews from the Gestapo.

A slice of central Asia in the middle of Berlin.

Frequent fliers welcome in this airplane hotel.

Affectionately known as "Lord Bot," this historic statue has a cult social media following and rightly claims to be “the most metal inhabitant of the Wren Yard.”

A 130-year-old urinal is the oldest of Stockholm and perhaps all of Sweden.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

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.

A man has revenged his true love's betrayal through tears and stone genitalia.

This small museum nestled inside a souvenir shop is dedicated to Sweden's most well-known toy.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

A plaque marks the house in Stockholm where the French philosopher René Descartes lived up until his death.

A wooden street sign is the last remnant of this 400-year-old alleyway.

Stockholm's narrowest alley is barely over two feet wide.

One of the world's first dedicated bank buildings in the world is now the oldest one.

A temporary art piece to celebrate LGBTQ Pride is now a permanent part of Stockholm's traffic landscape.

The scars of a remarkably organized public protest to save 13 elm trees are still visible in this Stockholm park.

Outside a Viking museum sits a modern-day runestone made by a Swedish runemaster using traditional methods.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.