Pompeii's less famous neighbor is still revealing her secrets.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

Renaissance villa and gardens complete with a tormented colossus.

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

As can be expected from a centuries-old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

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

Architectureal fantasy quarter of Rome.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

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

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

This tri-part waterfall is a little bit of fairytale beauty in the heart of Luxembourg's Little Switzerland.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

Two standing giants remain as a tribute to Luxembourg's metallurgical past.

In the heart of Luxembourg's "little Switzerland" weaves a breathtaking natural sandstone canyon with a mythological past.

This Luxembourg cave is covered in cryptic looking marks left by mining activity.

A 12th-century castle featuring a sensory path where partially-sighted visitors can experience regional history through touch and sound.

For a few short weeks in spring, this hiking path becomes a daffodil paradise.

Luxembourg's first beer museum honors the Grand Duchy's contributions to the art and science of beer-production.

Germany's longest suspension rope bridge.

A beautiful gorge filled with streams and waterfalls.

After this historic church was destroyed by World War II bombing, its blackened shell was left standing as a monument.