These delicate sand pyramids look like naturally occurring gothic spires.

A huge enchanting public park just outside the ancient walls of Rome.

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

A fake medieval village in the middle of Turin.

The giant skeleton sculpture is surprisingly well-traveled.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

Ancient snack bar of the Roman Empire re-opened.

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

Medieval torture techniques with a modern conscience.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

This museum is rotten with a century of wax medical deformities.

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

Secret refuge and museum of the Duke of Florence.

The astonishing collection of an infamous criminologist.

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

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

This abandoned Brutalist treehouse is a hidden architectural relic.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

Dramatic sea stacks adorn the coast of this small village on the Adriatic coast.

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

A sunken idol welcomes parishioners to Davy Jones' Locker.

This Italian foot path winds through the mountains via 52 individual tunnels.