At the beginning of the 13th century, the Teutonic Order built a monastery stronghold whose remains can still be seen today in the vaults of the Austerlitz Palace. The first written testimony about the place date from 1237. The Czech name "Slavkov" is first documented in 1361, the German name "Austerlitz" in 1633. After the defeat of the Order in the Battle of Grunwald, the town became the property of a number of noble owners until, in 1509, the local noble family of Kaunitz assumed control for more than 400 years.