Spanish colonial architecture represents Spanish colonial influence on New World and East Indies' cities and towns, and it is still seen in the architecture as well as in the city planning aspects of conserved present-day cities. These two visible aspects of the city are connected and complementary. The 16th-century Laws of the Indies included provisions for the layout of new colonial settlements in the Americas and elsewhere.

Churrigueresque, also but less commonly "Ultra Baroque", refers to a Spanish Baroque style of elaborate sculptural architectural ornament which emerged as a manner of stucco decoration in Spain in the late 17th century and was used until about 1750, marked by extreme, expressive and florid decorative detailing, normally found above the entrance on the main façade of a building.