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Barmouth Bridge
Barmouth Bridge, also called Barmouth Viaduct or Pont Abermaw, is a largely wooden single-track railway viaduct crossing the Mawddach estuary in Gwynedd, Wales, opened in 1867.
Barn
A barn, also known as a cowhouse, is an agricultural building used to store crops, fodder, and machinery and to house livestock, varying in form by region.
Barndominium
A barndominium, colloquially a barndo, is a steel- or post-frame building finished as a home, often pairing open living space with an attached shop under one roof.
Barnes Railway Bridge
Barnes Railway Bridge, also known as Barnes Bridge, carries the Hounslow Loop railway across the River Thames between Barnes and Chiswick, London, alongside a disused 1849 cast iron bridge.
Barnsley Park (United Kingdom)
Barnsley Park, Gloucestershire: Grade I Georgian house and Grade II registered park near Cirencester, built by Brereton Bourchier from c 1700, altered by John Nash, containing a scheduled Roman villa and 49 ha field system.
Baroque architecture
Baroque architecture is the highly ornate and dramatic style that flourished in Europe from the 17th century to the mid-18th century. Originating in Italy, it became the first visual style with worldwide reach.
Barracks
Barracks, also called barrack blocks, are buildings or groups of buildings used to house soldiers, originally temporary huts and now usually permanent structures within a garrison.
Barrage (dam)
A barrage is a low, gated barrier built across a river to raise and regulate the upstream water level, an adjustable weir distinguished from a storage dam.
Barrel vault
The barrel vault, also known as a tunnel vault or wagon vault, is the simplest vault: a semicircular arch extended in length to form a tunnel-like ceiling, used since antiquity.
Barrier-free design
Barrier-free design is an architectural approach that removes physical obstacles such as steps, narrow doorways, and high controls, originating in the early 1960s and later succeeded by universal design.
Bartlett School of Architecture
The Bartlett School of Architecture is the architecture school of University College London, founded in 1919 and named for the contractor Sir Herbert Bartlett, with about 1,700 students.
Barton Swing Aqueduct
The Barton Swing Aqueduct is a movable navigable aqueduct in Barton-upon-Irwell, Greater Manchester, carrying the Bridgewater Canal over the Manchester Ship Canal, opened in 1894.
Basawakkulama Tank
Basawakkulama Tank (Abhaya Wewa, Abhayavapi), Anuradhapura, Sri Lanka: the first reservoir in the country's recorded history, built by King Pandukabhaya (437–367 BCE), capacity 1,910 acre-feet, still supplying pilgrims and irrigating 916 acres.
Bascule bridge
A bascule bridge is a movable bridge whose span, called a leaf, rotates upward like a seesaw on a counterweighted pivot to let vessels pass through a waterway.
Base flood elevation
Base flood elevation is the height floodwater is expected to reach in a 100-year flood, the reference for US floodplain rules, building codes, and insurance.
Base isolation
Base isolation is a seismic protection technique that places flexible bearings between a building or bridge and its foundation, reducing the earthquake forces transmitted to the structure.
Basement
A basement is the lowest storey of a building, with its floor wholly or partly below the adjoining ground, classified as full, daylight, walkout, or lookout.
Basilica
A basilica is a large rectangular hall with a central nave, side aisles, and an apse, used in ancient Rome as a law court and later as a church form.
Basilica Cathedral of Lima
The Basilica Cathedral of Lima (Basílica Catedral de Lima) is the Roman Catholic cathedral of Lima, Peru, on the Plaza de Armas, founded by Francisco Pizarro in 1535.
Basilica Cistern
The Basilica Cistern (Yerebatan Sarnıcı, Sunken Palace) is the largest covered Byzantine cistern in Istanbul, built under Justinian I about 532 with 336 marble columns near the Hagia Sophia.
Basilica of Bom Jesus
The Basilica of Bom Jesus, also called Bom Jesus Basilica, is a Jesuit church in Old Goa, India, consecrated in 1605, housing the relics of St Francis Xavier.
Basilica of Maxentius
The Basilica of Maxentius, also called the Basilica of Constantine, was the last and largest civic basilica of ancient Rome, a vaulted concrete hall in the Roman Forum.
Basilica of Our Lady of Guadalupe
The Basilica of Our Lady of Guadalupe, also known as Basílica de Guadalupe, is Mexico's national sanctuary in Mexico City, housing the Virgin Mary's image on Juan Diego's tilma.
Basilica of Our Lady of Peace
The Basilica of Our Lady of Peace (Basilique Notre-Dame de la Paix) is a Catholic basilica in Yamoussoukro, Côte d'Ivoire, the largest church in the world.
Basilica of Saint Paul Outside the Walls
The Basilica of Saint Paul Outside the Walls (San Paolo fuori le Mura) is one of Rome's four papal basilicas, built over the tomb of the Apostle Paul.
Basilica of Saint-Denis
The Basilica of Saint-Denis, a Gothic church in Saint-Denis north of Paris, holds the tombs of French kings and its 1144 choir is considered the first Gothic structure.
Basilica of San Vitale
The Basilica of San Vitale is a sixth-century church in Ravenna, Italy, consecrated in 547 and famous for its Byzantine mosaics of Justinian I and Theodora.
Basilica of the National Shrine of the Assumption of the Blessed Virgin Mary
Basilica of the National Shrine of the Assumption, or Baltimore Basilica, is America's first Roman Catholic cathedral, built 1806-1821 by Benjamin Henry Latrobe for Bishop John Carroll, a neoclassical landmark with a 24-skylight dome, minor basilica since 1937.
Bastille
The Bastille was a 14th-century fortress at Paris's Porte Saint-Antoine, later a French state prison, stormed on 14 July 1789, an event marking the French Revolution's start, and demolished.
Batalha Monastery
Batalha Monastery (Mosteiro da Batalha) is a Dominican monastery in central Portugal, built to commemorate King João I's victory over Castile at Aljubarrota in 1385.