Chacaltaya, Astronomical observatory in the Bolivian Andes, Bolivia
Chacaltaya is an astronomical observatory and high-altitude research station in the Bolivian Andes, sitting at about 17,200 ft (5,240 m) above sea level. The site consists of a small laboratory building set on a rocky, nearly bare ridge with open views in all directions over the surrounding mountain peaks.
The Chacaltaya observatory was built in the mid-20th century and was at the time one of the highest of its kind in the world. Over the following decades it shifted from purely astronomical work to research on cosmic rays and atmospheric science.
Chacaltaya was once a popular ski area, and the remains of the old ski infrastructure are still visible on the site. Today visitors come mostly for the views and the experience of standing at one of the highest accessible points in Bolivia.
The road to the station is narrow and winding, so a vehicle with good clearance is recommended for the drive up. Because of the altitude, it helps to spend a day or two acclimatizing in a lower city before making the trip, and warm layers are essential.
The glaciers immediately around the site have retreated noticeably over the past few decades, making this one of the places where the effects of climate change are visible to any visitor without any scientific background. The rocky ground that was once covered by ice is now exposed and easy to see on a walk around the area.
The community of curious travelers
AroundUs brings together thousands of curated places, local tips, and hidden gems, enriched daily by 60,000 contributors worldwide.
