Macabre astrological automaton clock dating to the late 1400s.

Largest necropolis in the Mediterranean.

A 16th-century horror show built in a lovely Italian garden.

An exclusive waiting room built for the royal family in the 1920s is hidden in Milan’s central station.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

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

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

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

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

Eighty million natural history specimens call this gargantuan museum home.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

Life's work of sculptor Elisabet Ney remains preserved in her last studio.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

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.

An ornate Thai pavilion in the middle of Sweden.

The small peaceful island off the Venice tourist circuit is where the city began more than 1,500 years ago.

Go inside to really appreciate this 500-year-old technological masterpiece.

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

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

The celebrated eyesore created by starry-eyed sweethearts.

This bridge was constructed from the rubble of the infamous Bastille.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A fake medieval village in the middle of Turin.