Griffith Observatory
Observatorio Griffith
Photograph by Mike Peel ( www.mikepeel.net ). · CC BY-SA 4.0
observatory — United States
The most beautiful
Lick Observatory
Observatorio Lick
Fæ · Public domain
Kitt Peak National Observatory
Observatorio Nacional de Kitt Peak
KPNO/NOIRLab/NSF/AURA/P. Horálek (Institute of Physics in Opava) · CC BY 4.0
United States Naval Observatory
Observatorio Naval de los Estados Unidos
Harris & Ewing, photographer · Public domain
United States Naval Academy
Academia Naval de los Estados Unidos
Harris & Ewing, photographer · Public domain
Yerkes Observatory
Observatorio Yerkes
W. M. Keck Observatory
Observatorio W. M. Keck
Mount Wilson Observatory
Observatorio Monte Wilson
Arecibo Observatory
Observatorio de Arecibo
Palomar Observatory
Observatorio Palomar
Lowell Observatory
Observatorio Lowell