Yebes Observatory (Spanish: Centro Astronómico de Yebes (CAY)) is an astronomical observatory located at Yebes, Castilla-La Mancha, Spain.
Yebes Observatory is the main scientific and technical facility of the National Geographic Institute of Spain.
The facilities include two radio telescopes, a solar tower, an astrograph and a Gravimeter. The most powerful telescope is the 40 m telescope.
References
Yebes Observatory Wikipedia(Text) CC BY-SA