This semi-secret storybook hedge maze is also the oldest garden in the city.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

Puzzles within puzzles hide a golden treasure in this hedge maze.

Ruined castle with subterranean vaulted Goblin Ha' or "Goblin Hall."

One of the largest sculpture collections in the U.K. features history's greats, from Bob Dylan to Galileo, in bronze.

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

Eighty million natural history specimens call this gargantuan museum home.

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

A subterranean playground in an abandoned slate mine.

This series of Scottish caves has no clear purpose other than baffling historians.

This foolish Victorian sea fort was converted to a deluxe hotel.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

A modern English garden of eccentric beasts, follies, and oddities.

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

360° views of the city plus five floors of optical illusions and hands-on science.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The longest hedge maze in the world.

A 30-acre garden inspired by the principles of modern physics.

The atmospheric road was never meant to be so creepy.

Northern Ireland's Brobdingnagian stepping stones.

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

A kaleidoscopic warehouse-maze of handmade neon signs.