The Pergamonmuseum is one of the most important museums in Berlin, famous throughout the world for its collection of ancient, oriental and Islamic art. It is located inside the so-called "Museum Island", declared a UNESCO World Heritage Site. The Pergamonmuseum was built between 1910 and 1930 to a design by the architect Alfred Messel and quickly became one of the main attractions of Berlin. The reason for its construction was the need to provide the city with an additional museum space for archaeological finds from the German collection: in fact, with the discovery of Troy by the famous archaeologist Heinrich Schliemann, German archeology achieved extraordinary results in the 19th century. Excavations were carried out in Pergamum, Miletus, Babylon, Uruk, Assur and Egypt and important architectural monuments, sculptures and small ancient objects landed in Berlin. Soon, however, the space was no longer sufficient. The Pergamonmuseum is striking above all for the monumentality of the works exhibited inside. Among the major examples is the Pergamon Altar, dating back to the 2nd century BC and considered one of the main masterpieces of the Hellenistic period. The frieze depicts the battle between gods and giants; the Porta del Mercato di Mileto (2nd century), a gigantic marble facade and ancient entrance to the Mileto market; the reconstruction, thanks to the remaining fragments, of the Ishtar Gate, a monumental blue and gold gate, part of the eighth gate that led to the center of the city of Babylon, built at the behest of King Nebuchadnezzar II in the sixth century;