Weekend Visits to the La Silla Observatory

Registering for a guided tour


Visit the La Silla Observatory from your armchair with our Virtual Tours. Click on the thumbnail to experience a 360° visit.

Guided tours for tourists and the general public are offered every Saturday except during July and August, due to the risk of snowstorms in winter time.

  Arrival on La Silla Start of tour
Saturdays 13:30 14:00

The guided tours are free of charge, but registration is required as there is limited space. Large groups are asked to register as far in advance as possible.

To register for a visit to La Silla, please submit the Visitor Form. We do not accept bookings by mail or phone.

For special inquiries about the visit or information which is not available on our web pages, please contact: visits@eso.org. For emergency calls about the visit or booking:+56 - 9 - 98395312.

Anyone visiting La Silla (or any ESO site) must read and sign the Release Form in English or Spanish. Once signed, the form must be delivered on arrival at the observatory gate. An email copy of the form can unfortunately not be accepted.

Additional information is available on the following pages:

Travel to ESO La Silla & Security and Safety Advice

Please follow this link for very important information on how to reach ESO Paranal and security and safety advice.

The La Silla Observatory does not offer transport for tourist visitors.

Tour Information

Arival at ESO La Silla

You should arrive at the Observatory 30 minutes before the start time of the tour.

While on La Silla

All buildings and public areas on La Silla are non-smoking.

During your visit, you must stay with the ESO Guide at all times. In an emergency, always follow the Guide’s instructions.

The La Silla Observatory permits photographs and video recording during the tours.

The La Silla Observatory is located at 2,400 metres altitude. We recommend that you do not walk quickly.

For safety reasons, children under 5 years are not allowed.

You are welcome to bring a light snack or lunch. There are no facilities on-site that offer meals. We recommend that you limit intake as excess can cause stomach inflammation and digestive problems at high altitudes. You will be allowed on site one half hour before the tour is scheduled to begin, and restroom facilities are available.

Ask questions! The more questions you ask, the more you will learn. The guides are trained to answer your queries.