This giant crucifix is like U2's Joshua Tree for Swedish death metal fans.

The palace for King Gustav III was never completed, but the foundation remains tucked away in this city park.

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

The library's graceful rotunda is like a bibliophile's temple.

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

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

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

A heated statue pays tribute to one of Sweden's great actresses.

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

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

This statue and park honor the Swedish chemist Jacob Berzelius, one of the founders of modern chemistry.

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

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

The scars of a remarkably organized public protest to save 13 elm trees are still visible in this Stockholm park.

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

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

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

This centuries-old rooster survived a devastating fire.

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

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

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

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.

18th century opera in its original splendor.