5,208 articles
Saemangeum Seawall
The Saemangeum Seawall (새만금방조제) is a 33.9 km embankment on South Korea's west coast, described as the world's longest seawall, built from 1991 to 2010.
Safavid architecture of Isfahan
Safavid architecture of Isfahan is chiefly the Naqsh-e Jahan ensemble of mosques, pavilions, bazaar, and bridges begun under Shah Abbas I, who made Isfahan his capital in 1597–98.
Safe Drinking Water Act
The Safe Drinking Water Act (SDWA) is the 1974 United States federal law authorizing the EPA to set national health-based standards for the nation's public drinking water supply.
Safety and working environment in shield tunnelling
Safety in shield tunnelling is the occupational control regime for shield machines: hyperbaric working rules, chamber entry, ventilation and fire management, and ground control during mining and ring erection.
Sagamore Hill
Sagamore Hill is the Queen Anne house on Long Island that Theodore Roosevelt made his home, serving as the Summer White House from 1902 to 1908.
Sagrada Família
The Sagrada Família, also known as the Basílica de la Sagrada Família, is a Roman Catholic basilica in Barcelona designed mainly by Antoni Gaudí and still under construction.
Saidai-ji
Saidai-ji (西大寺, "Great Western Temple") is a Buddhist temple in Nara, Japan, and head temple of the Shingon Risshū sect, founded in 765 by Empress Shōtoku.
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 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 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-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-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.
Salesforce Tower
Salesforce Tower, also known as Transbay Tower, is a 61-story, 1,070-foot (326 m) office skyscraper at 415 Mission Street in San Francisco, the tallest building in the city.
Saline Water Conversion Corp
Saline Water Conversion Corp (المؤسسة العامة لتحلية المياه المالحة), known as SWCC, was a Saudi government corporation that desalinated seawater, established by royal decree in 1974.
Salisbury Cathedral
Salisbury Cathedral, the Cathedral Church of St Mary, Salisbury, is the cathedral of Salisbury, Wiltshire, an exemplar of Early English Gothic built from 1220 and consecrated in 1258.
Sally port
A sally port, also called a sally gate, is a secure controlled opening in a fortification or prison; in forts it let a besieged garrison launch sorties.
Salt Lake Tabernacle
The Salt Lake Tabernacle is a domed assembly hall on Temple Square in Salt Lake City, completed in 1867 by members of The Church of Jesus Christ of Latter-day Saints.
Sameura Dam
Sameura Dam is a 106-meter concrete gravity dam on the upper Yoshino River in Kōchi Prefecture, Japan, supplying water to all four Shikoku prefectures since the 1970s.
Samia Suluhu Hassan Stadium
Samia Suluhu Hassan Stadium is a football stadium under construction in Arusha, Tanzania, named after the president and set to host 2027 Africa Cup of Nations matches.
Sampoong Department Store collapse
The Sampoong Department Store collapse, also known as the Sampoong Collapse, destroyed the five-storey Sampoong Department Store in Seoul on 29 June 1995, killing 502 people in South Korea's deadliest disaster.