Modern mountain observatory

1200 × 800

astronomical observatory structures

1792 × 1200

Niagara Falls viewing area

1600 × 1200

Great Wall of China — Green, Serene, Afternoon, Photograph, People

1600 × 1055

Potala Palace in Lhasa

2560 × 1920

Chapel on Lake Shore — Green, Serene, Summer

1920 × 1080

Church on Lake Shore — Blue, Serene

5616 × 3744

Neuschwanstein Castle in Bavaria

1024 × 768

Church by a mountain lake

1280 × 1024

Park Güell Architecture — Blue, Serene

2560 × 1600

Palace with ornate architecture

1920 × 1440

Reichstag glass dome interior

2400 × 1600