This pump on the bad side of Victorian London betrayed a horrifying revelation about the water supply.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

Two plaques commemorate the site of Shakespeare's first theatre.

Giant, friendly pelicans in Central London, the most unlikely of places.

This London plaque marks the spot where David Bowie's famous alien made his debut.

Remnants of cells from the most notorious London prison may lie in the basement of a rare Victorian Gin Palace.

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

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Installed at a chaotic intersection, this gave London traffic cops a place to hang their heavy woolen coats.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

This intricately carved and hilariously huge bed was such a famous symbol both Shakespeare and Byron used it in their writing.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

The final resting place to 300 Victorian-era pets hides inside the city park.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

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

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

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

One of Ireland's most infamous prisons for rebels including men, women and children.