Palazzo Re Enzo - Palace in Bologna, got its name from the governor of Sardinia Enzo, stepson of the Emperor Frederick II, who was imprisoned here from 1249 until his death in 1272.

The palace was built in 1245 as an extension of the nearby Palazzo Podesta .  Then he simply called the Palazzo Nuovo - new palace .  Three years after the completion of construction at the Battle of Fossalta was captured Sardinian Enzo, who after a short stay in Anzola moved to Bologna and imprisoned in the new Palazzo .  According to legend, the day the prisoner was allowed to walk around the palace, but at night he was locked in a cage suspended from the ceiling .  He had his own court staff and even his own chef .  Enzo also allowed to see women - were born so his three daughters and, according to unconfirmed versions, the son born of simple peasant .  The boy was named Bentivoglio from the words «Amore mio, ben ti voglio», which translated from Italian means "Mother, I love you" .  It is said that he became the ancestor of the famous family of Bentivoglio - Bologna rulers in the 15th century .  Enzo was buried in the Basilica of San Domenico, as he wanted . 

In 1386, Antonio di Vicenzo finished the three hundred Hall - Sala dei Trecento, which became the city archives. In 1771 the project of Giovanni Giacomo Dotti was a large-scale reconstruction of the last floor of the palace, and in the early 20th century, it acquired its present Gothic appearance thanks to the architect Alfonso Rubbiani. To the right of the Palazzo Re Enzo is the chapel of Santa Maria dei Karcherati through which those sentenced to death. On the first floor of the palace kept Karrochcho - four-wheel carriage, the altar on which the priests were serving in the battle and other military weapons, and the middle floor was occupied by offices Pretoria and another chapel.

Today, Palazzo Re Enzo luxury having a 2500 sq.m. Square is one of the main historical attractions of Bologna.