A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

A 125-meter long "tribute to the Brazilian people."

Famously misunderstood wonder of the ancient world

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Giant topiary dog once played a role in a terrorist bomb plot.

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

Historic medieval fortified city in southwest France.

The oldest botanical garden in the world that technically isn't the oldest.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The yawning maw of this pagan visage is said to bite off the hands of liars.

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

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

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Pompeii's less famous neighbor is still revealing her secrets.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Baroque celebration of the end of the Great Plague of Vienna.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

Budapest's Communist-era statues, banished to the suburbs.

This snug medieval lane is one of the narrowest streets in the world.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."