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The St. Gallus Chapel is a chapel within the abbey complex of Saint Gall. It was rebuilt in 1666/67 on the ground floor of the residence of the prince-abbot. It was consecrated in 1671 in conjunction with the Bishop's chapel (German: Bischofskapelle) above it.The chapel has an approximately square interior. The walls and ceiling are filled with 26 paintings depicting the life of saint Gall, presumably created by Johann Sebastian Hersche. There are two larger than life size statues next to the entrance, depicting Saint Maurice and Desiderius of Vienne. In the year 971, the Abbot Purchart von Udalrichingen had a chapel built in the same spot. Purchart was buried next to its entrance in 975 by the bishop Conrad of Constance.The St. Gallus Chapel, along with the St. Gallen Cathedral, serves as a baptistery of the St. Gallen Cathedral parish.

The Abbey of Saint Gall (German: Abtei St. Gallen) is a dissolved abbey (747–1805) in a Catholic religious complex in the city of St. Gallen in Switzerland. The Carolingian-era monastery existed from 719, founded by Saint Othmar on the spot where Gallus had erected his hermitage. It became an independent principality between 9th and 13th centuries, and was for many centuries one of the chief Benedictine abbeys in Europe. The library of the Abbey is one of the oldest monastic libraries in the world. The city of St. Gallen originated as an adjoining settlement of the abbey. The abbey was secularized around 1800, and in 1848 its former church became a Cathedral. Since 1983 the abbey precinct has been a UNESCO World Heritage Site.

The St. Gallen State Archive (German: Staatsarchiv des Kantons St. Gallen) is the archive for the canton of St. Gallen in Switzerland. Since the canton was founded in 1803, it has preserved the records relating to the cantonal authorities, the cantonal administration and the institutions of the state. It also contains records from the legal predecessors of today's canton. Organisationally, the State Archive is part of the Department of the Interior, located in the Office of Culture.

The Stiftskirche St. Gallus und Otmar (Collegiate Church of St. Gall and Otmar) is a Roman Catholic church in the city of St. Gallen, Switzerland. Part of the Abbey of St. Gall, it has been the cathedral of the Diocese of St. Gallen since 1847.Completed in 1767, the cathedral was designed by Peter Thumb, who also designed the Abbey's famous library. Among its rich decorations are frescoes painted mostly by Josef Wannenmacher, and the most complete set of historic church bells in Switzerland. The south altar features a bell brought back by Saint Gall himself from Ireland, one of the three oldest surviving bells in Europe.

Säntis was the name of a canton of the Helvetic Republic from 1798 to 1803, consisting of the territory of St. Gallen, Appenzell, and Rheintal. Its capital was St. Gallen.

The Abbey Library of Saint Gall (German: Stiftsbibliothek) is a significant medieval monastic library located in St. Gallen, Switzerland. In 1983, the library, as well as the Abbey of St. Gall, were designated a World Heritage Site, as “an outstanding example of a large Carolingian monastery and was, since the 8th century until its secularisation in 1805, one of the most important cultural centres in Europe”.

St. Gallen Spisertor station is a railway station in the city of St. Gallen, in the canton of St. Gallen, Switzerland. It is located on the 1,000 mm (3 ft 3+3⁄8 in) Appenzell–St. Gallen–Trogen line of Appenzell Railways (Appenzeller Bahnen, AB), and is served by local light rail trains only. There is also a bus stop for a regional bus line. The station is named after one of the city's seven former gates (Spisertor, dismantled in 1879). It is close to the Hotel am Spisertor.

Wegelin & Co. is a now-defunct bank that was located in St. Gallen in the Canton of St. Gallen in Switzerland, and specialized in private banking and asset management.Founded by Caspar Zyli in 1741, the company was renamed Wegelin & Co. in 1893. The bank's legal name changed multiple times by incorporating the names of the senior personally liable partners. As of 2013, the bank's name was Wegelin & Co. Privatbankiers, Gesellschafter Bruderer, Hummler, Tolle & Co. At the time of its closing, it was the oldest bank in Switzerland and the 13th oldest in the world.

Notenstein La Roche Private Bank was a Swiss private bank headquartered in St. Gallen and CHF 16.8 billion of client assets under management. The private bank, which had belonged to Raiffeisen (Switzerland) since 2012, was sold to Bank Vontobel in July 2018 and was fully integrated into that banking group as of 30 September 2018.

St. Gallen Marktplatz station, also called Marktplatz/Bohl, is a railway station in the city of St. Gallen, in the canton of St. Gallen, Switzerland. It is located on the 1,000 mm (3 ft 3+3⁄8 in) Appenzell–St. Gallen–Trogen line of Appenzell Railways (Appenzeller Bahnen, AB), and is served by local light rail trains only. The station is also a bus stop for local and regional buses.

The Sarganserland is a constituency (Wahlkreis) of the canton of St. Gallen, Switzerland, with a population of 36,892 (as of 2008). The constituency corresponds to the historical county of Sargans (13th to 15th century) and the later Landvogtei Sargans in the Old Swiss Confederacy (15th to 18th century). Part of the Canton of Linth in the Helvetic Republic, the Sarganserland together with Pfäfers was joined to the canton of St. Gallen at its formation in 1803. Geographically, it includes the land between the Rhine at Sargans (the tripoint of St. Gallen, Grisons and Liechtenstein) and upper Lake Walen, including the Seeztal. The territory of Pfäfers lies along the Tamina, in the Rhine basin, and was not historically part of Sargans county but was independently owned by Pfäfers Abbey, and had been joined to the canton of Linth in 1798.

St. Gallen is a constituency (Wahlkreis) in the canton of St. Gallen in Switzerland. The Wahlkreis (SFOS number 1721) has been established on June 10, 2001 with an area of 157.54 km2 (60.83 sq mi). The Wahlkreis takes its name from the city of St. Gallen.