St. Margrethen is a small city located in the canton of St. Gallen in eastern Switzerland. It is situated on the banks of the Rhine River, near the border with Austria. The city is known for its industrial and commercial activities, with a number of factories and businesses located in the area. St. Margrethen also attracts visitors with its charming old town, which features historic buildings and a picturesque town square. The city is conveniently located near major transportation routes, making it easily accessible for both residents and travelers.