This bridge's unique architecture honors nautical heritage and encourages self-awareness.

Copenhagen's celebrated theme park and gardens.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

A little-known cafe in an old copper bridge tower with 360-degree views of the harbor.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

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

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

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

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

Enormous ants wielding giant pine needles guard a Stockholm real estate company's office.

A Japanese video game arcade hides in the back of a Swedish pool hall.

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

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.

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

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

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

Rome's semi-secret peephole vista is also a former Crusader stronghold.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

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

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

Sound travels strangely in this underground whispering gallery.

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