A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

The final resting place of soldiers' loyal canine companions.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

A six-ton wedding present for the King of the Scots.

The fountain marks the area where hundreds of accused witches were burned at the stake.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

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

Protecting the dead from opportunistic body snatchers.

The tomb of one of Scotland's bloody historic villains is a magnet for bumbling desecrators.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

The niches over the western entrance of Westminster Abbey honor individuals from the 20th century who gave their lives for their Christian beliefs.

This long-hidden space above Westminster Abbey now displays the battle gear of the legendary King Henry V.

A museum marks and documents the site of the Titanic's launch.

These engineering masterpieces are a dominant feature of the Belfast skyline.

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.

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

The oldest public library in Ireland.

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

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.