Related to astronomical observatory structures

Sigiriya Rock Fortress

5437 × 3654

Interior of the Colosseum

1024 × 768

Machu Picchu ancient ruins

1024 × 768

Colosseum in Rome

2160 × 1440

Colosseum interior ruins

2304 × 1728

Colosseum in Rome

3000 × 1999

Colosseum in Rome

1600 × 1200

Colosseum in Rome

1600 × 1000

Ancient ruins of Ephesus

1920 × 1080

Lenin's Mausoleum and Kremlin

1600 × 1067

Matsumoto Castle in Japan

1600 × 1064

palace with formal gardens

2560 × 1600

Colosseum in Rome

1680 × 1050

Castel Sant'Angelo in Rome

1920 × 1080

Great Pyramid of Giza

1920 × 1080

Great Wall of China view

1600 × 1055

Roman Forum ruins

1600 × 1200

Osaka Castle in Japan

2560 × 1600

Jerónimos Monastery in Lisbon

1600 × 1200

Roman Forum ruins

1200 × 900

Colosseum interior view

1600 × 1000

Mayan pyramid at sunset

1200 × 900

model of ancient amphitheater

2048 × 1536

Binoculars overlooking a city

1600 × 1000