Amsterdam's former hotspot for public executions and dissections.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

A floating cat sanctuary on an Amsterdam canal.

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

This artificial archipelago was supposed to resemble a map of the world.

Billed as the "largest natural flower garden in the world" this Middle Eastern show field has little competition at 45 million flowers.

This triumphal 16th-century arched gateway leads to the oldest street in Palermo.

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

A petite white lighthouse perched on the ancient core of Stromboli Volcano.

The world's most active stratovolcano is almost always erupting.

Built on a medieval synagogue, this church has a burial crypt, tunnel system, and Jewish ritual bath hiding deep underneath.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

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

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

These elaborate gothic monuments honor Verona's medieval lords.

Pilgrimage site for star-crossed lovers.

This sturdy, circular stronghold served as one of the forts that protected the Venetian Lagoon.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

Two stone columns flank the grand Venice square, but there were supposed to be three.