Tower of David or Jerusalem Citadel. Jerusalem, Israel. Courtyard, behind a high stone wall. Sightseeing in the Old town of Irusalim Stock Photo
RFR829DP–Tower of David or Jerusalem Citadel. Jerusalem, Israel. Courtyard, behind a high stone wall. Sightseeing in the Old town of Irusalim
Crescent shaped Fort of San Bartolome built in the 15th century at the citadel, medieval fortifications in old town Pamplona, Navarra, Spain Stock Photo
RF2J1TMKD–Crescent shaped Fort of San Bartolome built in the 15th century at the citadel, medieval fortifications in old town Pamplona, Navarra, Spain
Inside the citadel, a large medieval fortified palace, in the centre of the old city of Aleppo, Syria, before the civil war. Stock Photo
RMHAFEW7–Inside the citadel, a large medieval fortified palace, in the centre of the old city of Aleppo, Syria, before the civil war.
Great Mosque of Muhammad Ali Pasha within the walls of  the Saladin Citadel, a medieval Islamic fortification in  Cairo, Egypt Stock Photo
RMRDPRBM–Great Mosque of Muhammad Ali Pasha within the walls of the Saladin Citadel, a medieval Islamic fortification in Cairo, Egypt
A typical old winding narrow street in Old Town Kotor,quiet in the late afternoon. Stock Photo
RF2E1BKKN–A typical old winding narrow street in Old Town Kotor,quiet in the late afternoon.
Ruins of the Citadel in the old town of Budva on the Adriatic Coast of Montenegro Stock Photo
RM2M9G3P3–Ruins of the Citadel in the old town of Budva on the Adriatic Coast of Montenegro
Great Mosque of Muhammad Ali Pasha within the walls of  the Saladin Citadel, a medieval Islamic fortification in  Cairo, Egypt Stock Photo
RMRDPRBN–Great Mosque of Muhammad Ali Pasha within the walls of the Saladin Citadel, a medieval Islamic fortification in Cairo, Egypt
Fagaras Fortress Stock Photo
RFPCKMK6–Fagaras Fortress
Fortifications in Main Gate area at Castle hill in Berat, UNESCO World Heritage Site, Albania Stock Photo
RFPT3E97–Fortifications in Main Gate area at Castle hill in Berat, UNESCO World Heritage Site, Albania
View of the domes and minarets of the Great Mosque of Muhammad Ali Pasha in the Saladin Citadel, a medieval Islamic fortification in  Cairo, Egypt Stock Photo
RMRDPRBX–View of the domes and minarets of the Great Mosque of Muhammad Ali Pasha in the Saladin Citadel, a medieval Islamic fortification in Cairo, Egypt
The Palace of the Grand Masters in the old town of Rhodes, Island of Rhodes, Dodecanese, Greece Stock Photo
RMBJM5BJ–The Palace of the Grand Masters in the old town of Rhodes, Island of Rhodes, Dodecanese, Greece
Burcht Hill, a medieval 11th century stronghold in the old city centre of Leiden, The Netherlands Stock Photo
RMFD1B8E–Burcht Hill, a medieval 11th century stronghold in the old city centre of Leiden, The Netherlands
View of the domes and minarets of the Great Mosque of Muhammad Ali Pasha in the Saladin Citadel, a medieval Islamic fortification in  Cairo, Egypt Stock Photo
RMRDPRC0–View of the domes and minarets of the Great Mosque of Muhammad Ali Pasha in the Saladin Citadel, a medieval Islamic fortification in Cairo, Egypt