Architecture of Portugal refers to the architecture practiced in the territory of present-day Portugal since before the foundation of the country in the 12th century. The term may also refer to buildings created under Portuguese influence or by Portuguese architects in other parts of the world, particularly in the Portuguese Empire.
Portuguese architecture, like all aspects of Portuguese culture, is marked by the history of the country and the several people that have settled and influenced the current Portuguese territory. These include Romans, Suebians among other related Germanic peoples, Visigoths and Arabs, as well as the influence from the main European artistic centres from which were introduced to the broad architectural styles: Romanesque, Gothic, Renaissance, Baroque and Neoclassicism. Among the main local manifestations of Portuguese architecture are the Manueline, the exuberant Portuguese version of late Gothic; and the Pombaline style, a mix of late Baroque and Neoclassicism that developed after the Great Lisbon earthquake of 1755.
In the 20th century, Portuguese architecture has produced Fernando Távora, Eduardo Souto de Moura and Álvaro Siza.
The earliest examples of architectural activity in Portugal date from the Neolithic and consist of structures associated with Megalith culture. The Portuguese hinterland is dotted with a large number of dolmens (called antas or dólmens), tumuli (mamoas) and menhirs. The Alentejo region is particularly rich in megalithic monuments, like the notable Anta Grande do Zambujeiro, located near Évora. Standing stones can be found isolated or forming circular arrays (stone circles or cromlechs). The Almendres Cromlech, also located near Évora, is the largest of the Iberian Peninsula, containing nearly 100 menhirs arranged in two elliptical arrays on an East-West orientation.