The Ascheraden castle was one of the oldest strongholds of Livonia, erected by the Order of the Brothers of the Sword, and the only one from this group located south of Riga towards the pagan Lithuania. It was probably built on the site of a previously captured pagan hillfort. It was the seat of the order commandry, and the first commander recorded in the sources was managing castle around 1209, the order knight Hartmut. At that time, it was still a wooden stronghold, but in the first quarter of the 13th century, the first stone walls began to be erected. After the defeat of the Livonian Brothers of the Sword in the battle of Saulei, Ascheraden commandry was vacant for some time. The first Teutonic knight was in the 50s of the 13th century the knight called Heidenreich. Under the Teutonic rule, the castle was expanded several times, but already in the second half of the fifteenth century, the local convent did not meet the minimum number of 12 members required, and the castle settlement never developed in the Middle Ages to the size of the city. After the secularization of the order, the castle came under Polish-Lithuanian rule. In 1577 it was partially destroyed by the Muscovite army, but it was quickly rebuilt. The fall and destruction took place around the mid-seventeenth century, in 1680 it was already described as a ruin.
It is difficult to recreate the shape of the medieval stronghold. The upper castle consisted of three, and perhaps four wings, in which the rooms required by the order rule were located: refectory, dormitory, chapel, possible that also infirmary. At least one cylindrical tower was located at the north corner. In addition, the upper castle was protected from the west by two outer baileys. In the other directions protection was ensured by the Daugava river and the Karikste stream from the north-east.
Only fragments of the northern, corner tower of the upper castle have survived to the present. Unfortunately, a large part of the buildings, along with the foundations, fell to the river. Entrance to the ruins is free.
Borowski T, Miasta, zamki i klasztory, Inflanty, Warszawa 2010.