This once-derelict building is now one of the most beautiful bookstores in the world.

A long-buried ancient ruin unearthed right in the middle of the city.

Massive galleon from a box-office bomb docked in Genoa.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

Giant, friendly pelicans in Central London, the most unlikely of places.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

A novel collection of medical curiosities housed in an 18th-century surgeon training academy.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

An amazing collection of wax anatomical models and terratological models.

Vibrant street art created with mixed media.

A daily pyrotechnic celebration marks a beloved tradition during Valencia's festival season.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

The sinister ruins of one of the worst dam failures of the 20th century lie in this astonishing alpine setting.

Ruins battered by centuries of war and disaster offer a wondrous glimpse of medieval Ireland.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

While only two of the ancient buildings at this site are actually churches this was one of the earliest Irish pilgrimage sites ever.

The world of the ancient Celtic civilization explained through a bewitching 11 acre garden.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

360° views of the city plus five floors of optical illusions and hands-on science.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

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

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