A founding document of the European Union was written on an island where Roman emperors once banished women.

This historic hotel preserves many treasures from its heyday hosting passengers on the Orient Express.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

A part of the world's largest marsh seems to be growing bright red Martian grass.

A windswept necropolis carved into the rocks overlooks the "most Portuguese town in Portugal."

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

An ancient artistic garden parlor full of hidden water wonders.

A Milanese café entirely designed by the American director Wes Anderson.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

This Roman amphitheatre was also the location of the first gladiator school.

Outstanding, eerie frescoes and decorations fill this 19th-century monastery.

This stunning 15th-century royal hill fort preserves the age of chivalry in Rajasthan.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

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

The glowing blue Nymphaeum of Emperor Tiberius.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

The remains of diamond fever taken over by the desert.

Spend the night in this formerly abandoned traditional Scottish village.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

The ruins of an abbey believed to have been founded by Charlemagne in the 9th century.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.