Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

The body of at least one victim of a construction accident was left behind in the collapsed pylon, buried under tons of concrete.

If the tunes of antique organs and musical marionettes don't intoxicate you, the draft beer certainly will.

Started as a kitchen garden, now the second largest botanical garden in the world.

This tumultuous Icelandic lava field looks so alien European researchers want to use it as a stand-in for Mars.

This lurid German fountain plots the sad course of marriage from dating to death.

Nestled on the banks of a river in Nuremberg is a small museum that was once home of the city's official executioner.

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

A garden of flying flowers.

One of the world's heaviest musical instruments towers within a popular urban park.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

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

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

Stockholm's tiniest statue is of a small boy looking at the Moon.

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

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

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.

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.

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

Sweden's oldest animated sign is still lighting up the skyline today.

Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.