Above the smallest town in Slovakia – Blue Stone, there is a ruin of the castle of the same name called Blue Stone. Today it is home to the unique Museum of Dolphin Cultures and Toys.
Originally a Gothic castle built around 1137. Its first known owner was the Ditrich elected bathrobe from the family of the famous Donča Knight. At the time of the greatest boom, Modrý Kameň Castle was one of the most important in Hungary. It was an important part of the anti-Turkish defense line, but between 1575 and 1593 the Turks occupied it and destroyed it at the end of this period. After the Turks left, the Balassians put the castle back to its original state. However, after the new war, the Turks again destroyed it, and the Upper Gothic castle remained ruined from that time. In 1730, the Balassans built a baroque mansion in the lower part of the castle. Since then, the shape of the castle and the manor has not changed at all. At present, the Museum of Babylong Cultures and Toys, the only one of its kind in Slovakia, is located in the manor house. Visitors can see a long-term show “From the Life of Goblins”. The Central European rarity is a permanent historical exposition of the dentistry of the Slovak Chamber of Dental Technicians. In addition to exhibitions, several interesting events and festivals are held at the castle