The celebrated eyesore created by starry-eyed sweethearts.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

The ancient tomb acts as a calendar that keeps perfect time.

An ancient neolithic tomb that only sees the sun twice a year.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

Northern Ireland's Brobdingnagian stepping stones.

This Scottish manor house is a lush relic from the life of a literary great.

The final resting place of soldiers' loyal canine companions.

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

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

Largest lake in Great Britain measured by surface area.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Huge winged monument in the United Kingdom.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

Recently restored menagerie of Victorian-era beasts.

Eighteenth-century home, where Herschel discovered the planet Uranus.

Famously misunderstood wonder of the ancient world

The largest stone circle in the world has ended up bringing up more questions than it has answered.

Museum celebrating the history of computers, especially their role in codebreaking.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

Scattered throughout London are ancient remnants of the city's former bounding wall.

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

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

Giant relaxing Buddha in Malaysia.