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

Barcelona's only remaining tram system takes riders to the Tibidabo funicular.

A beautiful little museum hidden away in the heart of Barcelona holds a treasure trove of Ancient Egyptian artifacts

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.

Turntable anonymously received orphans, alms, and groceries.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

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

A beautiful but toxic fountain of mercury.

This semi-secret storybook hedge maze is also the oldest garden in the city.

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

The only museum about the history of dentistry in Canada.

A massive Montreal stadium that has seen nothing but trouble since its inception.

Montreal's giant farmer's market is a foodie's best friend, especially in the winter months.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

The biggest museum dedicated to insects in North America, one of the largest in the world.

Every year, the colorful murals of Montreal get a complete makeover.

A community-run museum invites visitors to explore Jewish communities before and after the Holocaust.

Look closely and you’ll notice that the color changes a third of the way up the tower.

There just so happens to be a court even higher than the U.S Supreme Court: a basketball court in the building itself.

The house where John Wilkes Booth conspired with his co-conspirators.

People escaping slavery may have hidden inside a corpse vault.