Its town washed away centuries ago, this lonely tower by the sea tells the tale of a mermaid and a curse.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

Largest lake in Great Britain measured by surface area.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

A massive base for the Nazis' most formidable weapon in the Atlantic.

The remains of an encyclopedic sculpture garden later used as an internment camp.

This enormous censer uses a pulley system installed over 400 years ago.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

The longest staircase lock in Britain.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Yup, that's a 330-foot yacht passing over the highway.

The heart of Dutch football history.

This ghost town in Belgium will lose its street art when it ceases to exist.

Home to the world's oldest functioning orrery.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

A dream-like maze full of strange art, surreal spaces, and fantasy landscapes to get lost in.

The tallest waterfall in the Netherlands is a lovely, stepped feature that is only 50 feet tall.

Go inside a revolutionary, cage-less zoo where 35 species live and some of them roam free alongside their human visitors.

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.

Located inside Hoge Veluwe National Park, this museum began as the private collection of a prominent female art collector.

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

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