A marine aquarium with an astounding variety of fish hides in the basement beneath the famous Palm House.

A strange and ancient landscape hides the dark, cavernous remains of a 5,000-year-old flint mine.

A museum and gardens with unusual plants and a history of progressive programming for the blind.

These upturned herring boats make nifty storage sheds for fishing goods.

A monument to the thousands of Canadian soldiers who died capturing the French ridge during World War I.

A 16th-century footpath said to be haunted by a young girl that died trapped within its misshapen old house.

This haunting sculpture was created as a statement on the mechanized warfare of the First World War.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

A century-old tradition has culminated in a small but singular collection of feline effigies.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

Follow the original medieval paths that wind through this intriguing section of the city.

This Parisian gem is one of the most incredible ethnographic museums in the world.

This captivating Bronze Age timber circle spent centuries concealed by the tides.

This demon atop the Notre-Dame de Paris looks utterly bored.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

Brought to you by the makers of fiberglass dinosaurs.

A traditional American farmhouse plopped in the middle of a Piccadilly courtyard.

The fences outside some of South London's estates are made from recycled World War II stretchers.

London's marvelous wildfowl reserve along the Thames.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.