This chain of artificial lakes was an ideal test ground for the aircraft that would carry the "bouncing bombs" used by the WWII "Dambusters" squad.

Preserved baths in a Victorian-era spa town frequented by the most famous people of its day.

The largest Commonwealth memorial to the missing and dead of the Battle of the Somme.

A haunting museum chronicling the bloodiest battlefield of World War I.

The site where one of the most famous poems of World War I was composed is preserved to honor the legacy of the work.

In the shadow of a former battleground, the resting place for nearly 2,000 soldiers who died in World War I.

The curious underground history of keeping Paris clean.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

This modest marker near Notre Dame identifies the very center of Paris.

The location of this small park was once the site of an infamous public morgue.

This demon atop the Notre-Dame de Paris looks utterly bored.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

The site where two doves fell in love.

This place bears witness to the loss of many lives during WWII, and stands in stark contrast to the American Cemetery.

Housed in a historic 1840 home, this museum provides a window into the lives of everyday, 18th- and 19th-century Bulgarians.

This fifth-century church is one of the oldest Christian sites in the Balkans.

Step inside this medieval Orthodox gem and travel back to the 16th century.

The fake World Cup prize was secretly created after the first one was stolen in 1966.

Fulham F.C. imploded once everyone excised its giant, hated tribute to the King of Pop.

Hidden on the urban banks of a Manchester river are a series of abandoned waterside industrial sites.

Two of Manchester’s oldest buildings were moved twice.

The construction of this bridge dates back to the 15th century.

Once called "the biggest room in the world," this Victorian-era hall is so large that it contains a smaller 1970s heptagonal theatre.