Biržai is a charming town in northern Lithuania near the border with Latvia, famous for its historic castle, beautiful lakes and unique natural landscapes. The town has a long history connected with the powerful Radziwiłł noble family and was once an important defensive centre of the Grand Duchy of Lithuania. Today Biržai is known for its peaceful atmosphere, cultural heritage and interesting geological features. The main landmark of the town is the impressive Biržai Castle, a restored bastion-style fortress originally built in the 16th century by the Radziwiłł family. The castle played an important military role during wars between Lithuania, Sweden and Russia. Today the castle complex houses the Biržai Regional Museum “Sėla”, where visitors can explore exhibitions about local history, archaeology, traditional culture and the famous Biržai brewing traditions. The castle is surrounded by moats, defensive walls and scenic parkland, making it one of the most beautiful historical sites in northern Lithuania. Biržai is also famous for Lake Širvėna, the oldest artificial lake in Lithuania. A long pedestrian bridge crossing the lake offers wonderful views and is one of the favourite walking spots for both locals and tourists. Nearby parks and green areas create a calm and relaxing atmosphere. Nature lovers are attracted by the unique geological phenomena around Biržai. The region is known for its sinkholes formed by underground gypsum erosion. One of the most famous is the Cow Cave, a large natural sinkhole surrounded by local legends and stories. The surrounding Biržai Regional Park protects forests, lakes and karst landscapes unique in Lithuania. The town also has several historical churches and cultural sites. Church of St. John the Baptist is an important religious landmark with traditional architecture and local historical significance. Visitors can also discover local cafes, small museums and traditional Lithuanian cuisine. Biržai is well known for its long brewing traditions, and local beer is an important part of regional culture. Small traditional breweries and local restaurants give visitors a chance to experience authentic northern Lithuanian hospitality. Today Biržai combines history, nature and culture in a unique way. With its impressive castle, museum, lakes and unusual karst landscapes, the town offers visitors one of the most distinctive travel experiences in Lithuania.