A real flying saucer, contracted by the U.S. Air Force.

This stuffed pigeon of war had the very serious name "John Silver" until he lost a leg in battle.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

These murals stand as reminders to the troubled history of this Northern Ireland city.

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

This massive monument has been telling the time for 150 years—at a slight angle.

It was once nicknamed "the most bombed hotel in Europe."

Belfast's namesake river still winds below the city center, hidden from sight.

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

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

One of the first monuments dedicated to the accomplishments of the great Vice Admiral, Horatio Nelson.

Glasgow's own "tipsy" temperance monument.

Glasgow's memorial to the International Brigade volunteers from Great Britain who fought and died in the Spanish Civil War.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

A scattered trail of street art adds a pop of color to the city's stark structures.

Even though some of the buildings date back to the Victorian era, this research institute is still involved in cutting-edge astronomy research.

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

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

The final resting place of soldiers' loyal canine companions.

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

Accessible only at low tide, the deserted island is dotted with World War II ruins.

A 18th century graveyard and its astonishing cortege of macabre iconography.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.