In 1385, the ruling Wittelsbach family decided to build a new palace since the Alter Hof had become too small for their needs. Today, the former Royal Palace of Wittelsbach is one of the most extensive and recognizable landmarks of Munich. The main building was the first part of the royal residence to be erected. The palace grounds are a treasure chest of historic landmarks including numerous grottoes, courtyards, fountains, a medicine room, chapel and the delightful Wittelsbach fountain built by Duke Otto between 1611 and 1623. The Residenz houses the Crown Jewels, the late-baroque Residenz Theatre and the classicist Herkulessaal, a concert hall with amazing acoustics. A magnificent reminder of Germany's past, the Residenz is a spectacular peek into the royal family's lifestyle and cultural influence on the city.