The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople since its founding as the capital of the Eastern Roman Empire.

The Roman Walls of Lugo are ancient fortifications in Galicia, Spain.

The Walls of Ávila are a Romanesque military fence that surrounds the old town of the Spanish city of Ávila.

The Old City of Jerusalem is a 0.9 square kilometers walled area within the modern city of Jerusalem.

The Walls of Lucca are a complex defensive structure built around the historic center of the city.

Passetto di Borgo is a fortified passageway that connects the Vatican to Castel Sant'Angelo.

The Visby City Wall is a medieval defensive wall surrounding the Swedish town of Visby on the island of Gotland.

The Ramparts of Quebec City, located within La Cité-Limoilou area, are the only remaining fortified city walls in North America north of Mexico.

Jinshanling is a section of the Great Wall of China located in the mountainous area in Luanping County.

The Beijing city fortifications represent the historical city defense systems that protected Beijing, the capital city in China.