The first mention of Rzeszów comes from the act of giving royal on deposits by Casimir the Great John Pakosławic. His descendants adopted the name of the city from the name of Rzeszów. Probably existed at that time within the city fortifications and castle which is the ancestral seat of Rzeszów.

In the year 1458 Rzeszów was devastated during the invasion of the Italians, and shortly after the Tartars, who burned the village. After the expiry of the family Rzeszów widow of the last of their representative, she married Nicholas Spytka Lizęgę. It was he who in the early seventeenth century began the construction of the castle, which was to become a strong fortress capable to face the raids which have often experienced Rzeszow. Construction of the castle lasted probably around 1620, and soon after, in 1624, thanks to the fortifications Rzeszow said the attack Tartars. Documents mention three gates in the fortification of the city - Water from the east, ELM at the castle from the south and from the north A brick was also some towers, from which it was possible to strengthen the flank fire.

Nicholas Lizęga also did not leave a male heir. Castle and town by the mariaży and inheritance passed successively into the hands of Ostrogskich and then Lubomirski. The representative of the latter family, George Sebastian, rebuilt in the second half of the seventeenth century, the castle and surrounded it with stone bastion fortifications that could withstand even strong army. Castle accordance with the objectives has become one of the most powerful Polish fortresses.

During the Swedish invasion, after the departure of the rightful King John Casimir forces loyal to him were in their hands four powerful fortresses of Jasna Gora, Lviv, Łańcut and Rzeszow. I Rzeszów fortress was one of the centers direct mobilization of the nation against the Swedish invaders. Grand Royal Marshall Jerome Sebastian Lubomirski from the castle Pent directed the appointment and organization of the militia. These were the most important moments in the history of the fortress.

After the turmoil of war, at the end of the seventeenth century, Lubomirski ordered the architect Tylman Gameren soar beyond the moat palace that has survived to this day. Fortress lost its military importance, became a baronial residence, which is surrounded by lush gardens, a zoo was established on the island. During the partitions castle took over the Austrian authorities and urządziły in the court, and some of the rooms allocated to prison.

The castle began to decay and during the nineteenth century due to the significant destruction of the buildings of the castle was demolished. The arena was built between 1903-1906 administrative buildings with a courtyard in the middle. Stone bastions resisted the destruction and demolition. To this day the only one drawing on the topographic map of 1762 years representing the then established Lubomirski.

Rzeszów lock has not yet been thoroughly studied by scientists and has no documentation of their development. Today, it houses the Provincial Court.