After 400 years of being closed to the public, this monastery's underground tunnels and secret garden are now a museum.

Despite the name, these small saltwater swimming pools have nothing to do with the Romans.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

A wonderfully strange collection of 500+ stuffed frogs doing people things.

The local club's soccer field is practically surrounded by UNESCO-protected monuments.

A miniature train-ride through Slovenia's largest cave system.

A 19th-century perch for spotting sailing ships now boasts one of the most iconic views in the Southern Hemisphere.

This historic observatory contains the world's oldest refracting lens telescope.

This green and white building is shaped like a massive Rubik's Cube.

A tribute to the city's rich history of shipbuilding.

This steel sculpture made from a recycled crane towers above a former shipyard.

One of England's oldest stone churches and the birthplace of the "father of English history."

Eat fish and chips in a striking Neoclassical building that once hid a public lavatory.

This sculpture made up of 22 bulbous bronze figures reminds locals of massive Weeble Woobles.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

Scotland still bears an enormous scar of its Roman past.

This bronze cat looks out over the Linlithgow Canal.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

Macbeth's infamous "Great Birnam Wood."

This astronomical clock is the second oldest in England.

The oldest residential street in Europe also features an optical illusion.

Cornish legend says these ancient circles were people turned to stone for playing hurling on a Sunday.

This massive metal scallop is a tribute to an English composer who once walked across this beach.

Unusual British home built to disguise a water tower.