The Alberta Legislature Building was built between 1907 and 1913 in the Beaux Arts style at the same time as the much larger Saskatchewan and Manitoba legislative buildings by architects Allan Merrick Jeffers and Richard Blakey. Montreal architect Percy Nobbs helped with the final revisions. Allan Merrick Jeffers served as the Alberta Provincial Architect from September 1907 to 1910. Jeffers may have been influenced by the State House of Rhode Island, where he had been a student.
The style was associated originally with the École des Beaux-Arts in Paris and was fashionable in North America between 1895 and 1920. The use of Greek, Roman, and Egyptian architectural influences was considered appropriate for a public building, as they suggested power, permanence, and tradition. Beaux-Arts buildings are characterized by a large central dome above a spacious rotunda, a symmetrical T-shaped plan, doors and windows decorated with arches or lintels, and a portico supported by massive columns. The dome has terracotta made by Gibbs and Canning of Tamworth, Staffordshire, UK.