The elaborate two – story complex (13th-12th century BC) with toyal apartments and workshops is unique among Mycenaean palaces due to its complete lack of defensive walls. The Palace of Nestor, the wise old king of Homeric fame, was unearthed in 1939, revealing more than 600 clay tablets inscribed with a mysterious script that has come to be known as Linear B, the first written language in history to use syllabic signs.