Tower of David museum, the main courtyard, jerusalem Old City, Israel, Middle East

Cannons at Fine Arts Museum, Citadel, Hue, Thua Thien-Hue, Vietnam, Indochina, Southeast Asia, Asia

Peter and Paul Fortress on Neva riverside, UNESCO World Heritage Site, St. Petersburg, Russia, Europe

Overview of the Winter Palace (State Hermitage Museum), the Admiralty, and the St. Peter and Paul Fortress along the banks of the Neva River, St. Petersburg, Russia, Europe

Fine Arts Museum, Citadel, Hue, Thua Thien-Hue, Vietnam, Indochina, Southeast Asia, Asia

The Peter and Paul Fortress, UNESCO World Heritage Site, St. Petersburg, Russia, Europe

Sforza Castle medieval tower, 15th century Castello Sforzesco fortified round tower, Milan, Lombardy, Italy, Europe

Peter and Paul Fortress on Neva riverside, UNESCO World Heritage Site, St. Petersburg, Russia, Europe

The Citadel Museum, Aleppo (Haleb), Syria, Middle East

Buildings used as store rooms at the Citadel of Qaitbay, also known as Fort of Qaitbay, Alexandria, Egypt

Uniformed performers known as the Fort Henry Guard lead British military life demonstrations and tours for visitors to Fort Henry Historic Site and Living History Museum, Kingston, Ontario, Canada, North America

Firing historic cannons at Fort Henry Historic Site and Museum of Living History with uniformed performers known as the Fort Henry Guard performing British military life demonstrations and tours for visitors, Kingston, Ontario, Canada, North America

Firing historic cannons at Fort Henry Historic Site and Museum of Living History with uniformed performers known as the Fort Henry Guard performing British military life demonstrations and tours for visitors, Kingston, Ontario, Canada, North America

Finnish Artillery Museum in front of Hämeenlinna Castle and Fortress, Finland

Fingers of the Statue of Hercules and the Jordanian Flag in front of the Archaeological Museum, Jebel al-Qala, Amman, Jordan

St George's obelisk, Dmitry tower, Nizhny Novgorod (Gorky), Russia

Historical Museum, citadel, fortress, Belfort, Franche-Comte, France, Europe

Harbour full of boats and an illuminated ferris wheel at night with lights illuminating the Chateau de Dieppe castle on the hillside; Dieppe, Normandy, France

Egypt, Alexandria, Citadel of Qaitbay, also known as Fort of Qaitbay.