Sangay is an active stratovolcano in central Ecuador. It is the most active volcano in Ecuador, despite erupting only four times in recorded history, because the eruption that started in 1934 is still ongoing. It exhibits mostly strombolian activity.

Sansicario is a frazione of the comune of Cesana Torinese in Piedmont, north-western Italy. It lies at 1,700 m in the Val Susa. It is a famous winter tourist resort.

Saxon Switzerland is a hilly climbing area and national park around the Elbe valley south-east of Dresden in Saxony, Germany. Together with Bohemian Switzerland in the Czech Republic, it forms the Elbe Sandstone Mountains.

The Scottish Borders is one of 32 council areas of Scotland. It borders the City of Edinburgh, Dumfries and Galloway, East Lothian, Midlothian, South Lanarkshire, West Lothian, and, to the south-west, south, and east, the English counties of Cumbria.

Sestriere is a resort in Italy’s western Alps, near the French border. It’s part of the Vialattea ski area, with dozens of slopes hosting major competitions.

Sheep's Head, also known as Muntervary, is the headland at the end of the Sheep's Head peninsula situated between Bantry Bay and Dunmanus Bay in County Cork, Ireland.

Sibiu is a city in Transylvania, central Romania. It’s known for Germanic architecture in its old town, the legacy of 12th-century Saxon settlers. Around the city are the remains of medieval walls and towers, including the 13th-century Council Tower.

Sichuan is a southwestern Chinese province that contains a stretch of Asia’s longest river, the Yangtze. The region is the home of giant pandas, which visitors can observe at Bifengxia Panda Base and other reserves.

Sincholagua is an inactive volcano located in Ecuador 17 km (11 mi) northeast of Cotopaxi Volcano and 45 km (28 mi) southeast of Quito. ... Due to its close proximity to Cotopaxi, the second highest peak in Ecuador and the most popular volcano.

The Singalila Ridge is a north-south mountain ridge running from northwestern West Bengal through Sikkim in the Indian part of the Himalayas. The district of Ilam in Nepal falls on the western part of this ridge.