彦根城 (Hikone Castle) is a historic Japanese castle located in Shiga Prefecture. It was built in the early 17th century and is one of the few original castles in Japan that has survived intact. The castle is known for its beautiful architecture and scenic views of Lake Biwa, making it a popular tourist destination. The castle is designated as a National Treasure of Japan and is surrounded by a lovely park filled with cherry blossom trees. Visitors can explore the castle grounds, learn about its history, and enjoy the picturesque surroundings, especially during the cherry blossom season.