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Quinta da Regaleira
Quinta da Regaleira is a historic estate near Sintra, Portugal, combining a palace, chapel, gardens, and the spiral Initiation Well; it forms part of UNESCO's Cultural Landscape of Sintra.
Quirinal Palace
The Quirinal Palace (Palazzo del Quirinale) is a palace on the Quirinal Hill in Rome and, since 1946, the official residence of the President of the Italian Republic.
Quonset hut
A Quonset hut is a lightweight prefabricated building with a semi-cylindrical corrugated steel shell, developed by the US Navy in 1941 and named for Quonset Point, Rhode Island.
Qutb Minar complex
The Qutb Minar complex, also called the Qutb Complex, is a group of mosques, minarets, and tombs at Mehrauli in Delhi, built from the late 12th century onward.
R. C. Harris Water Treatment Plant
The R. C. Harris Water Treatment Plant, also known as the R. C. Harris Filtration Plant, is Toronto's largest drinking water plant, opened in 1941 and nicknamed "The Palace of Purification" for its Art Deco architecture.
R. Shankar Nair
R. Shankar Nair is a Chicago-based structural and civil engineer elected to the National Academy of Engineering in 2005 for his design of innovative bridges and building structures.
Race Through New York Starring Jimmy Fallon
Race Through New York Starring Jimmy Fallon is a motion-simulator ride at Universal Studios Florida where guests race Jimmy Fallon through 3D New York City, opened in 2017.
Rachel Armstrong
Rachel Armstrong is a British applied scientist and sustainability innovator who works on living architecture, and is ZAP Professor of Regenerative Architecture at KU Leuven in Belgium.
Radial gate
The radial gate, also called the Tainter gate, is a dam spillway gate with a curved upstream face that rotates on a horizontal trunnion to control water flow.
Radisson Blu
Radisson Blu, formerly Radisson SAS, is an upper upscale hotel brand created in 1994, renamed in 2009, and the largest upper upscale hotel brand in Europe.
Radisson Hotels
Radisson Hotels is the central brand of Radisson Hotel Group, a Brussels-based company owned by Jin Jiang International that operates over 1,640 hotels in Europe, Asia-Pacific, and beyond.
RAF Cranwell
RAF Cranwell is a Royal Air Force station in Lincolnshire, England, and the RAF's principal center for initial officer training, described as the world's first air academy.
RAF Spadeadam
RAF Spadeadam is a Royal Air Force station in Cumbria, England, hosting Europe's only Electronic Warfare Tactics facility where UK and NATO aircrews train against simulated threats.
Raffles Hotel
Raffles Hotel is a luxury hotel in Singapore, opened in 1887 by the Armenian Sarkies brothers and known as the birthplace of the Singapore Sling.
Raglan Castle
Raglan Castle (Castell Rhaglan) is a ruined late medieval fortress-palace in Monmouthshire, Wales, begun by Sir William ap Thomas in 1435, enlarged by William Herbert, Earl of Pembroke, and destroyed after surrendering to Parliamentarians in August 1646.
Rahul Mehrotra
Rahul Mehrotra (born 1959) is an Indian architect, urbanist, and educator who founded RMA Architects in Mumbai and Boston and is a professor at Harvard's Graduate School of Design, known for the Kinetic City concept.
Raigad Fort
Raigad Fort, formerly known as Rairi, is a hill fort in Maharashtra, India, that served as Chhatrapati Shivaji Maharaj's capital and the scene of his 1674 coronation.
Railway bridge failures
A railway bridge failure is the loss of structural function of a bridge carrying rail traffic, caused by flood scour, fatigue cracks, collisions, and material degradation.
Railway bridges and viaducts by country
Railway bridges and viaducts by country is a country-by-country survey of notable rail bridges, from the record 1,408 m Yavuz Sultan Selim span to the world's highest bridges in China.
Railway bridges of North American Class I railroads
The railway bridges of North American Class I railroads are privately owned bridges inspected at least annually under federal rules; CSX reports more than 13,800 and CN 7,250.
Rain garden
A rain garden, or stormwater garden, is a shallow planted depression that collects stormwater runoff from roofs and driveways and lets it soak into the ground.
Rain gutter
A rain gutter, also called an eavestrough in Canada, is a channel along a roof's eaves that collects runoff and carries it through downspouts away from walls and foundations.
Rainbow Bridge (Niagara Falls)
The Rainbow Bridge is an international steel arch bridge connecting Niagara Falls, New York, with Niagara Falls, Ontario. Completed in 1941, it replaced the ice-destroyed Honeymoon Bridge.
Rainwater harvesting
Rainwater harvesting, also called rainwater collection or rainwater catchment, is the collection of rainwater from roofs and catchments for storage and later use, practiced for millennia and used today for both water supply and stormwater management.
Raising of Chicago
The Raising of Chicago was a public works program begun in 1855 that raised city streets several feet and lifted buildings to install the first US sewer system.
Raising of dams
Raising of dams, also called dam heightening or crest raising, is the modification of an existing dam to increase its crest elevation, enlarging reservoir storage or restoring flood safety.
Rajgad Fort (राजगड)
Rajgad Fort (राजगड), literally "Ruling Fort," is a hill fort in Pune district, Maharashtra, captured by Shivaji in 1647 and the first capital of his Swarajya.
Ram Mandir (राम मंदिर)
Ram Mandir, formally the Shri Ram Janmabhoomi Mandir, is a Hindu temple in Ayodhya, India, consecrated in 2024 at the site Hindus believe to be Ram's birthplace.
Ramada
Ramada, also known as Ramada Inn, is a midscale hotel brand franchised by Wyndham Hotels & Resorts, founded in 1954 as a roadside motel chain in Flagstaff, Arizona.
Ramanathaswamy Temple (இராமநாதசுவாமி கோயில்)
Ramanathaswamy Temple (இராமநாதசுவாமி கோயில்), also called Rameswaram Temple, is a Hindu temple to Shiva on Pamban Island in Tamil Nadu, India, one of the twelve Jyotirlinga shrines.