📜 Astronomical observatory in Chile, home to several European Southern Observatory (ESO) telescopes. First observing site of the European Southern Observatory (ESO) in Chile. 🔍 One of the largest observatories in the Southern Hemisphere, known for dark night skies. Located on La Silla mountain at 2400m altitude. # Why Go 🔭 See advanced telescopes, including the New Technology Telescope (NTT) and 3.6m telescope 🌌 Experience a world-class astronomical site with dark skies 🔬 Learn about exoplanet discoveries and other scientific breakthroughs 🆓 Free weekly tours available # Why Avoid 🗓️ Tours require booking well in advance (6 months suggested) and re-confirmation 🗺️ Remote location, 150 km northeast of La Serena # Tips 📅 Re-confirm tour 10 days before visit. 🚗 Access via Panamericana Highway north (km 598), then turn east 📸 Photography is a popular activity # Cost 💰 Free weekly tours. # Hours 🕒 Weekly tours, book in advance.