The first museum in the world devoted to sexual gadgetry.

Macabre astrological automaton clock dating to the late 1400s.

Two stunning 17th-century libraries and a cabinet of curiosities.

A Swedish phone box converted into an informal village library.

A tiny town hall—in Sweden's one-time capital—might be the smallest in Europe.

Sweden's oldest street has not changed for nearly a millennium.

A water reservoir disguised as a castle stands atop a hill in a park in Stockholm city.

This building, previously used as a courthouse, has an unusual geological feature in its basement.

An abstract representation of weather in Sweden.

A concrete mushroom that divided Stockholm residents for nearly a century.

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

Small Easter eggs are hidden in the ventilation holes of the city's newest trains.

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

A king's bloodstained shirt is among the gruesome collection of artifacts displayed below Stockholm's Royal Palace.

A former suicide bridge is now accumulating symbols of love instead of a body count.

When this 18th-century observatory's meridian was moved, it set Sweden's time back by 0.04 seconds.

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

No one knows who's responsible for decorating this tunnel with stuffed animals, but the people love it enough to protest their removal.

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

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

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

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

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

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