Fodor's Expert Review Cerro Tololo Observatory
Perched at 2,200 meters (7,200 feet), Cerro Tololo Observatory runs free tours of its two principal telescopes on Saturdays. During January and February, priority is given to nonspecialist visitors—although high demand means it’s worth reserving at least a month in advance—while the rest of the year the observatory tours cater principally to delegations. Tours should first be requested by phone or email; once the reservation has been made, permission certification can be picked up at the observatory’s offices in Las Serena on the corner of avenidas Huanhalí and J. Cisternas. Tours may be canceled in bad weather.