On Nobel Street, a miniature statue of Alfred Nobel.

The 19th-century home of Count and Countess von Hallwyl is now a museum.

The Swedish flag over this small naval fort signals that the nation is at peace.

Stockholm's last remaining paternoster elevator.

A Stockholm metro station is home to an escalator that is not only the longest in Sweden, but among the longest in the world.

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

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.

Sweden's "good old days" painstakingly re-created in a model village.

This Stockholm light tower can be controlled by anyone with a smartphone.

Stockholm's deepest subway station is also a stunning ecological wonder.

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

It houses the remains of a 17th-century version of the Titanic.

A rare surviving Victorian greenhouse designed specifically to house giant water lilies.

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

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

Paris' linguistic guide to the international language of, yes, love.

A garden of flying flowers.

The vast chamber inside this abandoned cooling tower looks like something out of a sci-fi dystopia.

A tiny metropolis resides inside this student housing complex.

You can spot this teeny tiny stained-glass window from the Bonifacius bridge.

This heavily worn bas-relief was once an honored fertility symbol.

A massive, gleaming sea turtle with a rider atop its shell looks out over the horizon.

The foundations of a forgotten fortress, wedged in between two streams.

A jazz band formed by African water animals in the heart of Flemish Brabant.