Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

This building features dozens of faces along its facade, although one is a bit chilling.

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

The 20-mile causeway that separates the Netherlands from the sea.

Remarkably preserved body discovered in a peat bog.

Pull up and have a drink at a museum filled with hundreds of years' worth of shipwreck artifacts.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

The history of sea-faring refuse and disaster is on cramped display in this Netherlands folk museum.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

A curious collection dedicated to human and animal anatomy and pathology.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

Amsterdam's former hotspot for public executions and dissections.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

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

One of Amsterdam's narrowest houses is located right across the canal from its widest.

The former headquarters of history's oldest megacorporation.

A public urinal so pretty, it was declared a national monument.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

The Rozenberg wind wall in South Holland makes for smooth sailing through the Calandbrug canal.

The Netherlands' first car tunnel has an unusually rectangular shape.

A dramatic art installation features a BMW flying out of a building in Rotterdam.