The only castle in North America to ever house European sovereigns.

Frida Kahlo's childhood home, now a museum of her life and works.

The palatial McDonald's that inspired Wesley Willis.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

The most visited, and possibly most controversial, museum in Germany.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Granting the right of way to ships over surface traffic since 1917.

This jazz venue welcomes performers nightly and students daily.

This Cold War siren is one off the last of its kind still standing with its immensely powerful original horn.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

A colorful architectural gem in Seattle's uniquely modern Central Library.

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

A beautiful final resting place for some of the noteworthy deceased.

A wall of chewing gum moonlights as collective art.

A museum dedicated to the history and exploration of both popular music and science fiction.

A giant Troll lurks under one of Seattle's oldest bridges.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

A walk through the historic city center, under the streets of Seattle.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

This enormous "shamoji" means more to the people of Miyajima than just a way getting rice onto a plate.

This little replica of Lady Liberty provides a bit of NYC in a Japanese city.