Related to astronomical observatory structures

Moai statues on Easter Island

892 × 600

ruins of a church in a cemetery

3648 × 2736

ancient aqueduct at night

5184 × 3456

monument with relief carving

1600 × 1325

Ancient temple structure

910 × 800

Aqueduct of Segovia

1024 × 768

Lahore Fort entrance

2640 × 1980

Castle ruins on a cloudy day

2048 × 1536

ancient ruins of persepolis

1920 × 1080

Ancient Roman amphitheater in Croatia

3072 × 2304

ancient ruins at dusk

1024 × 768

Ancient temple at Angkor Wat

1024 × 840

Ancient temple with tree roots

1598 × 1000

ancient ruins of persepolis

1024 × 768

ancient ruins of persepolis

1600 × 1200

Buda Castle archway view

800 × 600

arched colonnade with patterned floor

1024 × 768

Pre Rup Temple in Cambodia

1440 × 900

ancient fort on a hillside

1280 × 800

Ruins of an ancient cathedral

1198 × 800

Roman aqueduct in France

1600 × 1200

Ancient temple under dramatic sky

1024 × 711

Gothic cathedral facade

1010 × 758

Angkor Wat temple complex

896 × 672