The castle tower is a fragment of the oldest building in Tukums. It is believed that the construction of the castle in Tukums was commenced in 1277 by the Livonian Order. The castle was surrounded by a 7.5 m tall and 1.6 m wide stone wall. The castle defence was ensured by an artificial, deep moat and its position on the high bank or the River Slocene. Only a small stone wall fragment has been preserved from the castle, but the castle tower built in the 18th century in turns hosted premises for a prison and the caronal stocks (granary). Nowdays, it hosts the history museum of Tukums town, telling about the town's history from the ancient times up until the modern day.
References:Visby Cathedral (also known as St. Mary’s Church) is the only survived medieval church in Visby. It was originally built for German merchants and inaugurated in 1225. Around the year 1350 the church was enlarged and converted into a basilica. The two-storey magazine was also added then above the nave as a warehouse for merchants.
Following the Reformation, the church was transformed into a parish church for the town of Visby. All other churches were abandoned. Shortly after the Reformation, in 1572, Gotland was made into its own Diocese, and the church designated its cathedral.
There is not much left of the original interior. The font is made of local red marble in the 13th century. The pulpit was made in Lübeck in 1684. There are 400 graves under the church floor.