Monteserico Castle is situated on a hill in a strategic position for controlling commercial traffic on the Appian Way that passed nearby. First documented in 1041, the year of a famous battle between the Byzantines and the Normans, it became a domus during the Swabian period and a royal farmstead under the Angevins. The Monteserico Castle communicated with the Garagnone Castle and the Gravina Castle (commissioned by Frederick II) through signal torches to alert of approaching enemies.
Destroyed in the early 1500s, it underwent restoration in several phases from the 18th to the 19th century and has recently been the subject of restoration efforts.
In 1989, the municipality of Genzano di Lucania acquired ownership of the building.
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.