Lego blocks now patch Rouen's WWII scars.

An ancient ossuary in Rouen.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

A French museum of wrought iron.

This millstone commemorates a gruesome tale that may have been the source of the city's name.

20-foot tall lamp mumbles Swedish to celebrate the holidays.

This bronze marker acknowledges an embarrassing royal blunder.

An old Danish political institution where members of government can grab a drink off the record.

The final resting place of one of the brightest physicists of the 20th century.

Hidden in plain sight, a gravestone seemingly inscribed from the future stands among the cemetery’s historic tombs.

The final resting place of the author who gave us the Little Mermaid, the Ugly Duckling, and many more beloved fairy tales.

The first mosque in the world to receive electricity.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

This supermarket offers shoppers a window into the past alongside their groceries.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

A former fortified tower now houses a collection of classic communications equipment.

This is the largest cemetery in Ireland and the first cemetery museum in the world.

This pub built its reputation pouring post-shift pints for employees of the cemetery with which it shares a wall.

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

Though they've since been renamed, these two streets hint at Dublin's darker days.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

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."

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

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