La Silla in the southern part of the Atacama desert, 600 km north of Santiago de Chile .La Silla Observatory is hosting regularly Visitor Instruments that are attached to a telescope, for the duration of a run of observation and then is removed from the telescope.La Silla also hosts national telescopes, such as the 1.2m Swiss Telescope and the 1.5m Danish Telescope.

Telephone: +49 89 320060
Fax: +49 89 3202362
Website: http://www.eso.org/sci/facilities/lasilla/