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Castle of Mey
The Castle of Mey, formerly Barrogill Castle, is a sixteenth-century castle on the north coast of Scotland in Caithness, bought and restored by Queen Elizabeth The Queen Mother in 1952.
Castles and Town Walls of King Edward in Gwynedd
Castles and Town Walls of King Edward in Gwynedd: UNESCO World Heritage Site (1986) of Beaumaris, Conwy, Caernarfon, and Harlech castles plus Conwy and Caernarfon town walls, built for Edward I after 1283, largely by James of St George.
Castles in Scotland
Castles in Scotland, also known as Scottish castles, number up to 3,000, with around 750 substantially intact; the tower house dominated from the mid-1300s to the mid-1600s.
Castles of Augustusburg and Falkenlust at Brühl
The Castles of Augustusburg and Falkenlust at Brühl are a pair of 18th-century Rococo castles in Brühl, Germany, on the UNESCO World Heritage List since 1984.
Cathedral
A cathedral (Arabic: كاتدرائية) is the principal church of a Christian diocese, distinguished by housing the cathedra, the bishop's official seat; status is a designation, not a matter of architecture.
Cathedral Basilica of Saint Louis
The Cathedral Basilica of Saint Louis is the mother church of the Archdiocese of Saint Louis in Missouri, built 1907 to 1914 and famous for its mosaics.
Cathedral of Christ the Saviour (Храм Христа Спасителя)
The Cathedral of Christ the Saviour (Храм Христа Спасителя) is Moscow's main Russian Orthodox cathedral, built as a memorial to the 1812 victory over Napoleon.
Cathedral of Learning
The Cathedral of Learning is a 42-story, 535-foot Late Gothic Revival skyscraper in Pittsburgh, designed by Charles Klauder and built from 1926 to 1937 as the University of Pittsburgh's centerpiece.
Cathedral of Saint Paul (Minnesota)
Cathedral of Saint Paul, fourth cathedral of the Archdiocese of Saint Paul and Minneapolis, a Beaux-Arts granite and copper-domed church by Emmanuel Masqueray, opened 1915, completed 1940, on the National Register since 1974.
Catherine Palace (Екатерининский дворец)
Catherine Palace (Екатерининский дворец), formerly the Great Palace of Tsarskoye Selo, is a 1756 Rastrelli Baroque imperial residence in Pushkin near Saint Petersburg, home of the Amber Room, looted in WWII and reconstructed by 2003.
Catskill Aqueduct
The Catskill Aqueduct is a 92-mile conduit carrying up to 40 percent of New York City's drinking water from Ashokan Reservoir to Yonkers, built between 1907 and 1915.
Cattlemen's Steak House
Cattlemen's Steak House is a steakhouse in Oklahoma City's Stockyards City district, opened in 1910 and described as the city's oldest continuously operating restaurant, serving beef from the adjacent stockyards.
Causeway connecting Meninx (Gerba) to mainland
Causeway linking Djerba island (ancient Meninx, also Gerba) to the Tunisian mainland at El Kantara; a Roman-era causeway, possibly Pons Zitha, is presumed beneath the modern 7 km roadway, widened 1973.
Cavity wall
A cavity wall is an external wall built as two masonry leaves separated by an air cavity that stops rain reaching the interior, common in the United Kingdom.
CBRT Tower
CBRT Tower (TCMB Kule), Central Bank of the Republic of Türkiye Tower, is a 352-354 m, 59-62 floor supertall office skyscraper completed 2024 in Istanbul Financial Center, Ümraniye; Türkiye's tallest building, designed by Şefik Birkiye of Vizzion.
Cebu–Cordova Link Expressway
The Cebu–Cordova Link Expressway (CCLEX), also called the Cebu–Cordova Bridge, is an 8.9-kilometer toll bridge in Metro Cebu, Philippines, and the longest bridge in the country.
Cecil Hotel (Los Angeles)
The Cecil Hotel, also known as Stay on Main, is a 1924 hotel building in downtown Los Angeles that reopened in 2021 as affordable housing.
Cecil Lue-Hing
Cecil Lue-Hing (1930–2026) was a Jamaican-born American environmental engineer who spent 28 years directing research at Chicago's water reclamation district and advanced sewage sludge reuse as biosolids.
Cecilia (tunnel boring machine)
Cecilia is one of two tunnel boring machines that dug HS2's 10-mile Chiltern tunnel beneath the Chiltern Hills, launched in 2021 and completing her drive in March 2024.
Cedae
Cedae, or Companhia Estadual de Águas e Esgotos do Rio de Janeiro, is a Rio de Janeiro state company created in 1975 that supplies bulk water to the metropolitan region.
Cedar Covered Bridge
Cedar Covered Bridge, also known as Cedar Bridge, is a covered bridge over Cedar Creek near Winterset, Iowa, first built in 1883 and twice destroyed by arson.
Cedars Lock and Dam Historic District
Cedars Lock and Dam Historic District is a National Register district in Little Chute, Wisconsin, with a lock, dam, canal, and lockkeeper's house on the Lower Fox River.
Ceiling
A ceiling is the interior upper surface of a room, hall, or church, from plain plaster to fresco and suspended grids, serving structural, fire, acoustic, and thermal functions.
Cement
Cement is a hydraulic binder that hardens on reaction with water, and portland cement, made from limestone burned in a kiln, is the key ingredient in most concrete.
Cement board
Cement board is a rigid building panel made from Portland cement, aggregate, and reinforcing fibers, used as a dimensionally stable substrate for tile, stone, and exterior cladding.
Central Arizona Project
The Central Arizona Project is a 336-mile canal and pumping system carrying Colorado River water from Lake Havasu to Phoenix and Tucson, authorized in 1968 and built from 1973 to 1993.
Central Guard House, Berlin
The Neue Wache, or New Guard House, is a neoclassical building on Unter den Linden in Berlin, built from 1816 to 1818 to designs by Karl Friedrich Schinkel.
Central heating
Central heating is the heating of a building from one or more heat sources, distributed through ducts, pipes, or steam lines to radiators and other emitters.
Central Park Tower
Central Park Tower, also known as Nordstrom Tower, is a 1,550-foot mixed-use skyscraper at 217 West 57th Street on Billionaires' Row in Midtown Manhattan, the world's tallest residential building.
Central Pollution Control Board
The Central Pollution Control Board (CPCB), India's statutory pollution regulator, was created in 1974 and sets discharge standards while monitoring water and air quality nationwide.