A 19th-century subterranean reservoir repurposed as a contemporary art cave.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

A factory director designed what was the world's longest suspension footbridge in 1923 so his employees could get to work safely.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

Renaissance villa and gardens complete with a tormented colossus.

A little-known cafe in an old copper bridge tower with 360-degree views of the harbor.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

The largest bottled beer collection in the world holds over 22,000 unique beer bottles.

This sublime architectural marvel is a rare example of an expressionist church.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

One Italian taxi driver covered his entire house in small seashells creating a weird bit of architecture that is preserved to this day.