A beautiful Greco-Roman structure houses a well once believed to have healing powers.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

The building where Mary, Queen of Scots was said to have bathed in white wine.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

Looking strangely like Rome's Colosseum, this unfinished tower has dominated the skyline for over 100 years.

The oldest operating pharmacy in the world features 800-year-old recipes.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

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

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

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

The world's largest wooden structure.

Spain's largest bullring offers a unique glimpse at architecture and history.

The park is home to the United States's only still-operating Dutch windmill.

Its floors are marked by colorful cues depicting Michigan's native fauna.

What was once the largest NFL stadium.

The bones of an old zoo crumbling in the shadow of a new one.

Estonia's largest creative city is a vibrant bohemian hub located within a former industrial complex.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

"There's nothing there," and other lies the KGB told us.

Walk along the medieval fortifications that have been protecting Tallinn since the 14th century.

A medieval setting reimagined into a unique art alley.