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Saimaa Canal
The Saimaa Canal (Saimaan kanava) connects Lake Saimaa in Finland with the Gulf of Finland near Vyborg; first completed in 1856, it runs partly through leased Russian territory.
Saint Basil's Cathedral (Собор Василия Блаженного)
Saint Basil's Cathedral (Собор Василия Блаженного) is the ten-domed church on Red Square in Moscow, built by order of Ivan the Terrible from 1555 to 1561.
Saint Catherine's Monastery
Saint Catherine's Monastery, also known as the Sinai Monastery, is a Greek Orthodox monastery at the foot of Mount Sinai in Egypt, built under Emperor Justinian I in 548–565.
Saint Helena Airport
Saint Helena Airport is the British Overseas Territory of Saint Helena's first and only airport, opened to commercial flights in October 2017 with weekly Airlink service from Johannesburg.
Saint Isaac's Cathedral (Исаакиевский собор)
Saint Isaac's Cathedral (Исаакиевский собор), Saint Petersburg's Montferrand-designed neoclassical cathedral completed in 1858, a state museum since 1931, with 101.5 m dome, granite portico columns, and the 2017 church-transfer controversy.
Saint John LNG Terminal
Saint John LNG, known as Canaport LNG until 2021, is a liquefied natural gas terminal in Saint John, New Brunswick, Canada's only large-scale LNG import terminal.
Saint Joseph's Oratory
Saint Joseph's Oratory, also known as the Oratoire Saint-Joseph, is a Roman Catholic pilgrimage site on Mount Royal in Montreal, begun in 1904 by Brother André and known for its great dome.
Saint Lawrence Seaway
The Saint Lawrence Seaway is a binational system of locks and canals, built by Canada and the United States, carrying ocean vessels from the Atlantic to Duluth, Minnesota.
Saint Petersburg Dam
The Saint Petersburg Dam, or Leningrad Dam, is a 25.4 km storm surge barrier protecting Saint Petersburg from Gulf of Finland floods; completed in 2011, it is the world's longest.
Saint Sophia Cathedral, Kyiv
Saint Sophia Cathedral (Софійський собор), Kyiv: 11th-century Byzantine cathedral built under Yaroslav the Wise to rival Hagia Sophia; UNESCO World Heritage site since 1990, in danger since 2023, damaged by blast waves in 2025.
Saint-Chamond (tank)
The Saint-Chamond (Char Saint-Chamond) was a French heavy tank of the First World War, built at Saint-Chamond and second to enter service after the Schneider CA1.
Saint-Étienne-du-Mont
Saint-Étienne-du-Mont is a Catholic parish church on the montagne Sainte-Geneviève behind the Panthéon in Paris, begun in 1492 and consecrated in 1626, known for its surviving choir screen and the tombs of Pascal and Racine.
Saint-Eustache, Paris
Saint-Eustache is a large parish church in the 1st arrondissement of Paris, built from 1532 to the 1630s and home to one of France's largest pipe organs.
Saint-Gobain
Saint-Gobain, formally Compagnie de Saint-Gobain, is a French multinational construction materials company founded by Louis XIV in 1665 as the Manufacture royale de glaces de miroirs.
Saint-Laurent nuclear power plant
The Saint-Laurent nuclear power plant is an EDF-run French plant on the Loire between Orléans and Blois, with two 900 MWe pressurized water reactors commissioned in 1980 and 1981.
Saint-Sulpice, Paris
Saint-Sulpice is a Roman Catholic parish church on the Place Saint-Sulpice in the 6th arrondissement of Paris, built between 1646 and 1870 and one of the city's largest churches.
Saint-Thibéry Roman Bridge
Saint-Thibéry Roman Bridge (pont dit romain de Saint-Thibéry): ruined stone arch bridge over the Hérault at Saint-Thibéry, France. Long called Roman and tied to the Via Domitia at Cessero, its surviving masonry is medieval (c. 1150–1250), nine arches, four remain, classified 1862.
Saint-Venant torsion
Saint-Venant torsion, also called uniform or pure torsion, is the classical elasticity theory of how a prismatic bar of arbitrary cross-section twists under torque, formulated by Saint-Venant in 1855.
Sainte-Chapelle
The Sainte-Chapelle is a thirteenth-century royal chapel on the Île de la Cité in Paris, built by Louis IX to house Passion relics including the Crown of Thorns.
Sainte-Marie de La Tourette
Sainte-Marie de La Tourette is a Dominican priory near Lyon, France, designed by Le Corbusier and built between 1953 and 1960, regarded as his last major French work.
Sajaa field
The Sajaa field is an onshore gas and condensate field in the emirate of Sharjah, United Arab Emirates, discovered in 1980 and developed as Sharjah's first gas-condensate hub.
Sajaa–Hamriya Gas Pipeline
The Sajaa–Hamriya Gas Pipeline is a natural gas pipeline in Sharjah, UAE, running from the Sajaa Gas Plant to the Hamriyah Free Zone, completed in 2008.
Sakae Yagi
Sakae Yagi was a Japanese chemical engineer at the University of Tokyo who headed its chemical engineering department and was elected to the US National Academy of Engineering.
Sakai LNG Terminal
The Sakai LNG Terminal (堺LNGセンター) is a liquefied natural gas terminal in Sakai, Osaka, Japan, operated by Kansai Electric Power and in commercial service since January 2006.
Sakai Port power station
Sakai Port power station (堺港発電所, Sakaiko hatsudensho) is a 2,000 MW LNG-fired thermal power station of Kansai Electric Power in Sakai, Osaka, opened in 1964 and rebuilt as a highly efficient combined-cycle plant by 2010.
Sakaide Biomass power station
The Sakaide Biomass power station (坂出バイオマス発電所) is a 75 MW wood-fired power plant in Sakaide, Kagawa Prefecture, Japan, burning wood pellets to power about 170,000 households since June 2025.
Sakaide LNG Terminal
The Sakaide LNG Terminal (坂出LNG基地) is an LNG receiving and regasification terminal in Sakaide, Kagawa, Japan, opened in 2010 to fuel Shikoku Electric Power's Sakaide Power Plant.
Sakaide power station
Sakaide power station (坂出発電所) is a 1,385 MW gas- and oil-fired thermal power station in Sakaide, Kagawa Prefecture, Japan, owned by Shikoku Electric Power Company.
Sakana AI
Sakana AI is a Tokyo-based AI research company founded in 2023 by former Google researchers David Ha, Llion Jones, and Ren Ito, known for nature-inspired model-merging methods.
Sakana AI evolutionary model merging
Sakana AI evolutionary model merging is a 2024 technique using evolutionary search to automatically combine existing neural network models into a new one, without gradient-based training.