What looks like a birch tree smushed between two pieces of glass often confounds commuters.

A miniature model of the iconic Stockholm department store.

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

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

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.

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.

"Only the dead get off at Kymlinge."

A massive land art sculpture fills a green space once tarnished by a landfill.

Hans Christian Andersen for the postmodern world.

This quarry filled with 65 million-year-old limestone is now home to a nature reserve.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

A historic casino where Dostoyevsky is said to have lost it all on a single spin of the roulette wheel.

Time has been frozen at this station since the bombing in 1980—or so it was believed.

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

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

Featured in one of the most iconic scenes in cinema history.

One of the best-preserved Roman amphitheaters is still used today, but for less brutal events.

The reconstruction of this prominent building fulfilled a long-written command.

Remnants of the city's Soviet history hover over this modern fast-food outlet.

The only surviving piece of Copenhagen's 16th-century defensive wall.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

Macabre astrological automaton clock dating to the late 1400s.