International street musicians festival.
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Claudio Abbado Theatre
An opera house, built between 1786 and 1797.
On the 1st floor it hosts Pinacoteca Nazionale (National Gallery). The ground floor is dedicated for temporary exhibitions.
Este castle
The castle, built in 1385, is the main attraction of the city. It is one of a few medieval castles remaining in Europe that retains its moat. See painted ceilings, the Golden Room, the duchesses' Camerino, don't miss its medieval dungeon. €2 extra to climb one of the towers.
Its construction begun in the 12th century, so the lower part of the building has characteristic Romanesque appearance.
Palazzo Ducale
The Jewish Museum and the Synagogue are in the former ghetto (along the street used to be called Via Sabbioni).