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

The unusual burial monument of Arizona's first governor.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

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

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

This irregularly shaped sea fortress has defended not one but three different sovereign states.

This ten-ton fruit sculpture celebrates the Finland homeland.

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

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

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

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

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

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

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.

The discovery of an old wall led to the creation of this fascinating museum about the city in the Middle Ages.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

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

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

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

Swedish skyscraper with a 90° twist.

This platform is now a memorial dedicated to those who were deported during the Holocaust.

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