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Dike ring
A dike ring (dijkring) is a closed system of dikes, dunes, dams, or high ground in the Netherlands protecting an area from flooding as one unit.
Dilwara Temples
Dilwara Temples (Delwara, Delvada): five Jain temples near Mount Abu, Rajasthan, built 1031–1582, famed for intricate white marble interiors, Māru-Gurjara style, Śvētāmbara Pancha Tirtha status.
Dining room
A dining room, also called a dining area, is a room in a home or hotel where meals are eaten, especially the major or more formal meals.
Diocletian's Palace
Diocletian's Palace is a fortified Roman imperial residence in Split, Croatia, built around 300 as the retirement home of the emperor Diocletian; its streets now form Split's historic center.
Direct potable reuse
Direct potable reuse is the introduction of highly treated reclaimed wastewater directly into a drinking water system without an environmental buffer, pioneered in Windhoek, Namibia, in 1968.
Direct shear test
The direct shear test is a laboratory test that measures the shear strength of soil or rock by sliding one half of a specimen past the other.
Direct stiffness method
The direct stiffness method is a matrix-based structural analysis technique that assembles element stiffness relations into global equations, the basis of most finite element software.
Directional boring
Directional boring, also called horizontal directional drilling (HDD), is a trenchless method for installing underground pipes, conduits, and cables, used beneath rivers, roads, and railroads.
Disc cutter
A disc cutter is a rolling cutting tool mounted on a tunnel boring machine cutterhead, whose hardened steel ring crushes rock into chips under high pressure.
Disinfection by-products
Disinfection by-products (DBPs) are contaminants formed when disinfectants such as chlorine react with organic matter in drinking water; the US EPA limits trihalomethanes and haloacetic acids.
Dismal Swamp Canal
The Dismal Swamp Canal is a 22-mile artificial waterway from Deep Creek, Virginia, to South Mills, North Carolina, dug largely by enslaved labor, opened in 1805, and still operating today.
Disney utilidor system
The Disney utilidor system, or Utilidors, is a network of utility corridors beneath Walt Disney World's Magic Kingdom where cast members and supplies move out of guest view.
Disney's Pop Century Resort
Disney's Pop Century Resort, also known as Pop Century, is a value resort hotel at Walt Disney World in Lake Buena Vista, Florida, that opened on December 14, 2003.
Disneyland Paris
Disneyland Paris, also known as Euro Disney, is a Disney theme-park resort at Marne-la-Vallée, 32 kilometers east of Paris, opened in 1992 with two theme parks and seven Disney hotels.
Displacement ventilation
Displacement ventilation is a room air distribution method that supplies slightly cool air at low velocity near the floor, so warm, contaminated air rises to a ceiling exhaust.
Distilled water
Distilled water is water purified by boiling it into vapor and condensing the vapor back to liquid, leaving dissolved salts, minerals, and most contaminants behind.
Diversion dam
A diversion dam, also called a diversionary dam, is a low barrier across a river that raises the water level to divert flow into canals or ditches for irrigation.
Divriği Great Mosque
The Divriği Great Mosque (Turkish: Divriği Ulu Camii) is a 13th-century mosque in Divriği, central eastern Turkey, built in 1228–1229 by the Mengücekid emir Ahmed Shah.
Divya Desam (திவ்ய தேசம்)
Divya Desam (திவ்ய தேசம்), meaning "divine place," is one of the 108 Vishnu temples glorified in the Naalayira Divya Prabandham, the hymns of twelve Tamil Alvar poet-saints.
Dnieper Hydroelectric Station
Dnieper Hydroelectric Station, also known as DniproHES, is a hydroelectric dam on the Dnieper River at Zaporizhzhia, Ukraine, built in 1927–1932 as the showpiece of Soviet electrification.
Dnieper reservoir cascade
The Dnieper reservoir cascade, also called the Dnipro Cascade of Hydroelectric Stations, is a chain of six reservoirs on the Dnipro River in Ukraine, built between 1932 and 1976.
Dock
A dock is an artificial enclosure of water, closed by gates or locks, where vessels can be berthed, loaded, or repaired away from the tide.
Doge's Palace
The Doge's Palace (Palazzo Ducale) is a Gothic palace in Venice that was the residence of the Doge and seat of government of the Venetian Republic.
Dogpatch USA
Dogpatch USA was an amusement park built on Al Capp's Li'l Abner comic strip at Marble Falls in Newton County, Arkansas, which operated from 1968 to 1993 and closed after two decades of declining attendance.
Dohány Street Synagogue
The Dohány Street Synagogue (Dohány utcai zsinagóga), also called the Great Synagogue, is a Budapest synagogue built between 1854 and 1859, the largest in Europe and second largest in the world.
Dolby Theatre
The Dolby Theatre, formerly the Kodak Theatre, is a Hollywood Boulevard auditorium in Los Angeles that opened in 2001 as the permanent home of the Academy Awards.
Dolmabahçe Palace
Dolmabahçe Palace (Dolmabahçe Sarayı) is a former Ottoman imperial palace on the European shore of the Bosphorus in Istanbul, built between 1843 and 1856, where Atatürk died in 1938.
Dolos (breakwater)
The dolos is a concrete armor unit shaped like a ship's anchor, invented in South Africa in 1963 and placed on breakwaters worldwide to dissipate wave energy economically.
Dom Luís I Bridge
The Dom Luís I Bridge (Ponte Dom Luís I) is an 1886 double-deck iron arch bridge over the Douro River between Porto and Vila Nova de Gaia, Portugal.
Dome
A dome is a rounded roof or vault shaped like the upper half of a sphere, whose curved shell carries its weight to the ground without internal supports.