The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

The Great Fire of London and the regulation of one-way streets both started in this alley.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The location Geoffrey Chaucer and tale-telling pilgrims set off for Canterbury in April 1386.

With a history stretching back to the 16th century, this pub has a few stories to tell.

A memorial for public executions that dates back to the 14th century.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

Murals of the wild parties once held on the frozen River Thames.

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

Rebuilt remains of a temple to Roman god Mithras.

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

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

Perhaps the most scandalous statue of America's first president.

Home to items never before seen by the public.

The Corinthian columns that towered over Abraham Lincoln’s inauguration stand proud.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

The site of the climactic scene from the classic horror film is now a historic landmark.

At 207 feet, one of the world's longest continuous escalators.

This unique historical monument features large concrete spheres designed to resemble fallen stars.

Though his role as the inventor of baseball may be up for debate, fans still festoon Doubleday's grave with baseballs.

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

A museum dedicated to exhibiting remarkable outsider art.