Artillery Fort Magletsch, ("The Hammer") . An artillery fort from the 2nd World War. It was built during the Second World War and is the most northerly corner of the frotress Sargans.
Castle Sargans, . It is the most popular and most spectacular sight in Sargans. In the castle, there is the Sarganserland Museum where you can see historic and folkloristic objects.
Gonzen mine, . 15 km long. You can take a trip down the mine with the "Gonzen Express" or go for a 7-hour walk. You will experience the mysterious world of the miners. The workplaces have been left in their original conditions. There is also a restaurant on site.
Roman estate. The Roman estate is only partly preserved. It was destroyed either in 270 or 288 AD by an attack of the Alamanni or by a rockslide.