5,208 articles
Pembroke Castle
Pembroke Castle (Castell Penfro) is a medieval castle in Pembroke, Wales, founded by the Normans in 1093 and the birthplace of Henry VII in 1457.
Pena Palace
Pena Palace (Palácio Nacional da Pena) is a Romanticist palace in the Sintra Hills of Portugal, built by King Ferdinand II between 1840 and 1854 atop a 16th-century monastery.
Penang Bridge
The Penang Bridge (Jambatan Pulau Pinang) is a 13.5 km toll bridge in Malaysia linking Gelugor on Penang Island with Prai on the mainland, opened in 1985 as the island's first land link.
Pennsylvania Canal
The Pennsylvania Canal was a state-built system of canals and railroads whose Main Line linked Philadelphia and Pittsburgh, opening in 1834 as Pennsylvania's answer to New York's Erie Canal.
Pennsylvania county-numbered historic bridges
Pennsylvania county-numbered historic bridges are rural road bridges listed on the National Register under names like County Bridge No. 41, following a 1996 statewide inventory.
Penshurst Place
Penshurst Place, a fortified medieval manor house near Tonbridge, Kent, built in 1341 for Sir John de Pulteney and home to the Sidney family since Edward VI's 1552 grant, with Grade I house and registered Grade I park and gardens.
Penstock
A penstock is a pressurized closed conduit that carries water from a reservoir, canal, or surge tank to a hydroelectric turbine, usually made of steel for high heads.
Penthouse apartment
A penthouse apartment, also called a penthouse suite, occupies the top floor of a building and is typically the most expensive residential real estate in many cities.
Performance specification
A performance specification is a written construction requirement that states the result the work must achieve, such as an acoustic rating, and leaves materials and methods to the contractor.
Pergola
A pergola is an open garden structure of vertical posts and cross-beams that casts dappled shade, typically freestanding or attached to a building and often planted with climbing vines.
Peristaltic pump
A peristaltic pump, also known as a hose pump or roller pump, is a positive displacement pump that moves fluid by rhythmically squeezing a flexible tube, so the fluid touches nothing but the tube.
Permeable paving
Permeable paving, also called porous pavement, lets rainwater pass through the surface into soil and gravel instead of running off; types include porous asphalt and pervious concrete.
Persian architecture
Persian architecture is the building tradition of the Iranian plateau, spanning roughly three millennia from the Achaemenid Empire through the Parthian, Sasanian, and Islamic periods to today.
Peter and Paul Fortress
Peter and Paul Fortress (Петропавловская крепость), Peter the Great's 1703 citadel on Zayachy Island in Saint Petersburg; six-bastion star fort, site of the Romanov burial cathedral and the Trubetskoy Bastion political prison, now a history museum.
Peter Hall (town planner)
Sir Peter Hall (1932–2014) was a British town planner and geographer, widely credited as the originator of the enterprise zone and author of around 50 books.
Peter W. Barlow
Peter W. Barlow, also known as Peter William Barlow, was an English civil engineer who patented a cylindrical tunnelling shield in 1864, used in the Tower Subway.
Peter Zumthor
Peter Zumthor, born 1943 in Basel, is a Swiss architect known for carefully detailed buildings like the Therme Vals and winner of the 2009 Pritzker Prize.
Peterhof Palace (Петергоф)
Peterhof Palace (Петергоф), known as the Russian Versailles, is an imperial residence on the Gulf of Finland near Saint Petersburg, founded by Peter the Great in the early 18th century.
Petit Saut Dam
The Petit Saut Dam is a hydroelectric dam on the Sinnamary River in French Guiana, commissioned in 1994 and supplying about two thirds of the territory's electricity.
Petre Antonescu
Petre Antonescu (1873–1965) was a Romanian architect and professor, the most prolific practitioner of the Neo-Romanian style, known for Bucharest City Hall and the Arcul de Triumf.
Petronas Towers
The Petronas Towers, also known as the PETRONAS Twin Towers, are twin 88-storey office towers in Kuala Lumpur, Malaysia, completed in 1998 and still the tallest twin towers ever built.
Peveril of the Peak, Manchester
The Peveril of the Peak is a Grade II listed public house at 127 Great Bridgewater Street in central Manchester, known for its green and yellow tiled exterior.
Pfizer Building
The Pfizer Building is an International Style office tower at 235 East 42nd Street in Midtown Manhattan, Pfizer's world headquarters from 1961 until it vacated in 2023.
Pha That Luang
Pha That Luang (Lao: ພະທາດຫຼວງ, "Great Stupa") is a gold-covered Buddhist stupa in Vientiane, Laos, rebuilt in 1566, destroyed in 1828, and restored in the 1930s as the national symbol.
Philadelphia City Hall
Philadelphia City Hall, the seat of Philadelphia's municipal government, was built from 1871 to 1901 and remains the largest city hall in the United States.
Philadelphia Water Works
The Philadelphia Water Works is the municipal water supply system Philadelphia began operating in 1801, one of the first city-owned systems in the United States.
Philip Johnson
Philip Johnson (Philip Cortelyou Johnson, 1906–2005) was an American architect who introduced European modernism to the United States and built the Glass House in New Canaan, Connecticut.
Philippine Arena
The Philippine Arena is a 55,000-seat indoor arena in Bocaue, Bulacan, Philippines, commissioned by the Iglesia ni Cristo and opened in 2014 as the world's largest mixed-use indoor theater.
Philipsdam
The Philipsdam is a 7-kilometer dam in the Netherlands, part of the Delta Works flood-defense system, built between 1976 and 1987 to separate the freshwater Volkerak-Zoommeer from the saltwater Oosterschelde.
Photo-Fenton oxidation
Photo-Fenton oxidation is an advanced oxidation process for water treatment that combines iron, hydrogen peroxide, and UV or sunlight to generate hydroxyl radicals degrading organic pollutants.