A volcano in southern Washington at whose foot the ECETI ranch has operated since the 1980s — a site people come to specifically in order to watch the sky. In summer dozens camp here with binoculars and cameras, and reports of lights come in every night. It is a rare case on this list of a place known not for one incident but for a continuous practice of watching. The explanation is simple and takes nothing away: the mountain stands well clear of any town, the sky is dark, and low-orbit satellites are visible to the naked eye in their hundreds after sunset. That suits the people who come: there genuinely is a great deal to look at.

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Coyote Canyon and the Coyote Springs tract

Coyote Canyon and the Coyote Springs tract form a rugged canyon featuring natural mineral springs nestled at the foot of the Manzanita Mountains southeast of Albuquerque, New Mexico, USA. In the late 19th century, it was a quiet destination for wilderness camping and convalescence; in modern history, it became one of America’s most secretive and anomalous military corridors, absorbed into the restricted perimeter of Kirtland Air Force Base and Sandia National Laboratories—nearly a century before the Paul Bennewitz affair made it globally famous.