The longest hedge maze in the world.

The curios of pharmacist and collector Henry Wellcome.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

One part local history, 99 parts gruesome haunted house.

A hands-off space for graffiti artists to hone and display their skills.

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

Famously misunderstood wonder of the ancient world

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

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

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Recently restored menagerie of Victorian-era beasts.

The longest and tallest aqueduct in Britain can actually be sailed across.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

World's largest working waterwheel has been around for over 150 years.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

The most loyal of little dogs, or a Victorian era publicity stunt?

Largest lake in Great Britain measured by surface area.

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

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

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

"The Wonder From Down Under," a worm shaped museum celebrating the endangered Giant Gippsland earthworm.

The 18th-century home was disassembled into 253 cases and brought all the way from the other side of the world.

A whimsical menagerie of creatures carved into a 300-year-old tree trunk.