Augustus Welby Northmore Pugin was an English architect, designer, artist and critic with French and Swiss origins. He is principally remembered for his pioneering role in the Gothic Revival style of architecture. His work culminated in designing the interior of the Palace of Westminster in Westminster, London, and its renowned clock tower, the Elizabeth Tower, which houses the bell known as Big Ben. Pugin designed many churches in England, and some in Ireland and Australia. He was the son of Auguste Pugin, and the father of Edward Welby Pugin, Cuthbert Welby Pugin, and Peter Paul Pugin, who continued his architectural and interior design firm as Pugin & Pugin.

Gothic Revival is an architectural movement that after a gradual build-up beginning in the second half of the 17th century became a widespread movement in the first half of the 19th century, mostly in England. Increasingly serious and learned admirers sought to revive medieval Gothic architecture, intending to complement or even supersede the neoclassical styles prevalent at the time. Gothic Revival draws upon features of medieval examples, including decorative patterns, finials, lancet windows, and hood moulds. By the middle of the 19th century, Gothic Revival had become the pre-eminent architectural style in the Western world, only to begin to fall out of fashion in the 1880s and early 1890s.