Spiez is a picturesque town located on the shores of Lake Thun in the Bernese Oberland region of Switzerland. It is known for its beautiful castle, stunning views of the lake and mountains, and its wine production.

The castle, which dates back to the 13th century, is one of the main attractions in Spiez. It sits on a hill overlooking the town and the lake, and visitors can tour its various rooms and halls, including a chapel, armory, and banquet hall. The castle also has a beautiful garden with panoramic views of the surrounding landscape.

Spiez is also a popular destination for outdoor activities, such as hiking, cycling, and water sports. The town has a number of hiking trails that offer breathtaking views of the lake and the mountains, and visitors can also rent boats or kayaks to explore the lake.

Another highlight of Spiez is its wine production. The town is known for its vineyards, which produce a variety of wines, including Chasselas and Pinot Noir. Visitors can take a wine tour to learn about the production process and sample some of the local wines.

In addition to the castle and outdoor activities, Spiez also has a charming old town with narrow streets and historic buildings. There are also several restaurants and cafes where visitors can sample local cuisine and enjoy the lake views.