Lahnstein is a town located in the state of Rhineland-Palatinate, Germany. It lies at the confluence of the Lahn and Rhine rivers, making it a picturesque spot with scenic views. The town is known for its historical architecture, including the Lahnstein Castle, which dates back to the Middle Ages. The area around Lahnstein is popular for outdoor activities, such as hiking and cycling, thanks to its beautiful landscapes. It is also part of the Upper Middle Rhine Valley, a UNESCO World Heritage site, recognized for its cultural significance and stunning river scenery.