It was the scene of several battles, including most notably, Rákóczi's War of Independence and was eventually upgraded into a fortress in the early 18th century and ended up being used as a barn.
[2] The Lackfi Family built a new gothic wing in the 14th century, altered the old tower, and added an arcaded loggia to the back-front.
Mózes Buzlay, Marshall of King Ulászló II (1456–1516), improved the castle into a renaissance palace with the help of Italian masters and craftsmen from Buda.
Although Simontornya did not front the main road leading to the Danube, it was close enough to the strongholds of Veszprém and Várpalota, which at the time were held by the Kingdom of Hungary, which resulted in an increased military presence.
During the revolution against the Habsburgs, led by Prince Francis II Rákóczi, Simontornya became the stronghold of the Kuruc rebels in southwest Hungary.