Fort San Felipe del Morro

1600 × 1200

Rumeli Hisarı at night

1170 × 780

Fort Jefferson in Florida Keys

1200 × 796

Aerial view of Jerusalem

1024 × 768

Aerial view of Cairo's historic sites

1024 × 768

Sigiriya rock fortress

2217 × 1710

ancient fortress with mosque

800 × 600

Aerial view of beachfront city

1500 × 1009

Rome cityscape with Colosseum

1920 × 1080

Rome cityscape with Colosseum

3840 × 2400

U.S. Navy blimp over city

1200 × 947

Ankara Castle with Turkish flag

2087 × 1391