An observatory is a location used for observing terrestrial, marine, or celestial events. Astronomy, climatology/meteorology, geophysics, oceanography and volcanology are examples of disciplines for which observatories have been constructed. Historically, observatories were as simple as containing an astronomical sextant or Stonehenge.
Atacama Large Millimeter Array, Chile, at 5,058 m (16,594 ft)
Paranal Observatory, Chile, home of the VLT at 2,635 m (8,645 ft)
The Mauna Kea Observatories, Hawaii, home of several of the world's largest optical telescopes at 4,205 m (13,796 ft)
Roque de los Muchachos Observatory is an astronomical observatory located in the municipality of Garafía on the island of La Palma in the Canary Islands, Spain. The observatory site is operated by the Instituto de Astrofísica de Canarias, based on nearby Tenerife. ORM is part of the European Northern Observatory.
Overview of some of the telescopes at the Roque de los Muchachos Observatory.
Several of the helicopter pads built for the inauguration ceremony can be seen under the now dismantled HEGRA array
Telescopes at the observatory at sunset, from left to right: the NOT, the WHT, the DOT, the SST, the Mercator Telescope and the ING
Picture of the 10m Gran Telescopio Canarias building under construction in March 2003