London's smallest police station is barely the size of a phone booth.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

Where's a guy to go after a long, hard day at work?

This lush area was the site of extensive enemy bombing during WWII.

Residential building on the Regents Canal is a breeding ground for creativity and innovation.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

A flourishing garden with pigs, donkeys, goats, rabbits, guinea pigs, chickens, ducks, and sheep.

This former medical factory gives home to cutting edge arts in the shadow of a gas works.

An early 20th-century bullring converted into a modern shopping center.

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.

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

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

Napoleon's childhood home is now open for people to explore the beginnings of France's short general.

The burial place of an obscure North African saint was turned into a macabre body preservation factory for the 17th-century Neapolitan elite.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

Why a column on the entrance is inscribed with a verse from the Quran is one of Sicily's many mysteries.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

These precariously placed ruins harken back to a 13th-century castle.

Looming communist pillar with a Czech twist.

These quintessentially English stepping stones were built for Victorian tourists.

A tiny church on a man-made island in the Adriatic.

Winner of the Leeds Award for Architecture and the Environment.

An incarceration museum on the spot of possibly the oldest prison in England.