It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

An archway adorned with vulnerable flora and fauna.

Outside a Viking museum sits a modern-day runestone made by a Swedish runemaster using traditional methods.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

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

There's an exclusive Beefeaters pub hidden in the Tower of London.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

A quirky statue in Bermondsey made by 100 public participants with goggles, chisels, and mallets.

A recently restored substation that dates from 1875.

The world's largest collection of ship figureheads includes figures from legends and history alike, from Sir Lancelot to Abraham Lincoln.

This museum is dedicated solely to this millennia-old handheld cooling device.

A memorial commemorating the place where Truman gave the order to deploy the first nuclear bombs on Japan.

A quartet of tiled art pieces adorn the floors of this prestigious art museum.

One of the largest numismatic collections in Europe fell victim to a huge theft.

A plaque marks the former home of Käthe Paulus, an aerial acrobat who invented the modern folding parachute.

A dilapidated space station with overtones of 'Alien' and 'Bladerunner' featuring a multiplayer games galore.

Superb sweets await at the first Jewish bakery inducted into Berlin’s prestigious baker’s guild.

After fleeing the Syrian civil war, chef Malakeh Jazmati began serving exceptional renditions of her homeland's cuisine in Berlin.

Eat the ultimate iteration of Portugal's most beloved pastry.

This watchtower once presided over the Berlin Wall.

These lights mark the area of Rotterdam that was bombed and burned in 1940.

This pub has roots dating back to 1430.