A temple to modernity, tucked away amid Barcelona's more well known museums.

Lyon's "Wall of the Silk Weavers" is one of the largest murals in Europe.

Architectureal fantasy quarter of Rome.

Notorious artist squat renovated into legal studios.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

Charles Dickens was not a fan of the ghastly wall dressings in this 6th century church.

These gutted monastery ruins still stand proudly in the middle of the Italian countryside.

A stunning cemetery famous for its extraordinarily delicate & lifelike mourning sculptures.

Legend says this mysterious stone head belongs to a woman who was petrified by an alchemist.

This half-finished "city of toys" was almost Italy's own Las Vegas.

100 year tradition of fist fights, marked by marble footsteps.

Gigantic mosaic sculptures of the figures on Tarot cards fill this colorful Tuscan garden.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

One of the largest caves in the world open to the public.

An Italian ghost town that fought obscurity, until a mysterious illness brought it to its knees.

A complex, nine-layer maze on the grounds of a Venetian doge's playground.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

A Nesting Doll of Churches.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

The oldest operating pharmacy in the world features 800-year-old recipes.

This skeletal, unfinished Gothic church once housed a miraculous masterpiece by Raphael.

World's tallest cigar-shaped radio tower.

Hungarian self-built castle.