📜 World's most advanced radio observatory, located in the Atacama Desert, Chile. 🔍 Comprises 66 antennas, operating at 5,000 meters above sea level, working as a single gigantic dish. #Why Go 🔭 Observe the universe in millimeter and submillimeter wavelengths, including the cold universe, star and planet formation. 🌌 Research star formation, planetary systems, distant galaxies, and study the Milky Way's core. 🔬 High-resolution images, 10x better than Hubble. 🆓 Free tours available once a week. ⛰️ Unique high-altitude, dry conditions for observation at 5000m elevation. #Why Avoid 🗓️ Tours must be booked months in advance. 🚫 Array Operations Site (antennas) not open to public. ⬆️ High elevation (5000m) may be challenging for some, with potential for altitude sickness. #Tips 📍 The Operations Support Facility is open to visitors. 🗓️ Book tours well in advance due to limited availability. 🍀 Try showing up for a chance at cancellations. #Cost 💰 Tours are free. #Hours 🕒 Tours once a week; check website for schedule and book months in advance.