One Italian taxi driver covered his entire house in small seashells creating a weird bit of architecture that is preserved to this day.

Old batteries and frog skeletons reside in this lakeside monument to Alessandro Volta.

This curious building hides eclectic details like medieval gargoyles alongside naked angels and Art Nouveau mosaics.

Before there were doorbells this bronze ear was installed for visitors to announce their arrival.

The secret medieval communication system will whisk your words above the noise of the crowd.

Third time's a charm, or in this case, two testicles are.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

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

A beautiful but toxic fountain of mercury.

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

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

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

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

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

On the wall of this medieval walkway, a symbol of the Spanish Inquisition.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

This fountain was designed to honor the man who helped bring water to Barcelona.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

Saint Joseph was said to heal the deaf and blind, but it was a much smaller miracle that got him canonized.

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.

This garden boasts a magnificent collection of orchids and a spectacular view of the surrounding valley.

A street with an infamous past where the terminally ill were sent to die.