"The stately Pergamonmuseum, one of the highlights of Museum Island, is a UNESCO World Heritage site with five historical institutions devoted to art and archaeology. Built over 20 years and opened in 1930, the enormous three-wing museum is packed with ancient treasures from Rome, Greece, and the Middle East, some dating back 6,000 years. Its star attraction—and the museum’s namesake—is the Pergamon Altar, a masterpiece of Hellenistic art from 180–160 B.C. This is one of Berlin’s most-visited museums, so even though it’s large, expect a queue." - Jennifer Ceaser