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

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

A golden egg-shaped sauna in the Arctic tundra.

The remains of Alfred Nobel's first nitroglycerine factory can still be found on the shores of a Swedish bay.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Dedicated to a synagogue that was destroyed after having survived World War II.

No one knows the origin of this creepy little stone man with an oversized phallus.

A neo-Gothic mansion now houses a wunderkammer of analog tech that hits on all the senses.

Designed as a reminder of one of the darkest moments in Austrian history.

A magnificent collection of imperial armor and weaponry.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

The world’s only museum dedicated to baked beans.

One of the largest single-span stone-arch bridges in the Balkans looks like something straight out of a fairytale.

Amsterdam's Red Light District leaves little to the imagination.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

A public urinal so pretty, it was declared a national monument.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

This bronze statue of Martin Luther King was placed in the park without permission.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

This unattributed sculpture in Amsterdam is hiding in plain sight.

A beautifully eclectic mix of architectural styles.

This historic Amsterdam bar used to accept sailor's monkeys as payment.