Observatório do Lago Alqueva
Located at the heart of the Alqueva Dark Sky Reserve, Observatório do Lago Alqueva lies 100 miles (161 km) east of Lisbon, Portugal, right on the border with Spain. The observatory lies on the banks of Lake Alqueva —the biggest artificial lake in Europe— a picturesque region of Portugal that is surrounded by ancient megalithic monuments, millenial olive trees and vineyards. The medieval village of Monsaraz, which provides a wide choice in accommodation and restaurants, lies only 9 miles (15 km) away. The Solar observation sessions, as well as guided tours of the night sky (available in in English, Portuguese, Spanish and French) under Bortle class 3 skies are offered every day from Tuesday to Saturday for a nominal fee, but require registration via e-mail at email@example.com.