The "Black Arch" guards the entrance to the picturesque Glens of Antrim.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Fantastic views and thousands of love locks.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

A striking symbol of the Bulgarian capital.

Sofia's legislative center is continuously reinventing itself.

"Holy Wisdom" overlooks the city that became its namesake.

This historic black and white monastery is one of Bulgaria's architectural jewels.

A collection of art from Bulgaria's time as a communist state.

These moss-covered medieval ruins tower atop the smallest of Ireland's Aran Islands.

A steam trawler with a whiskey-soaked history driven ashore in 1960 resides rusty but still standing on the shoreline.

A series of stained glass artworks that depict images of the hit TV show.

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

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

Each time a baby is born in Ghent, these streetlights flash in silent celebration.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

Pop culture has helped to keep this iconic British building from being destroyed.

Chelsea's soldiers were given strict orders when crossing this historic bridge.

All unmarked mute swans on the Thames are owned by the Queen per a tradition that began in the 12th century.