Washington Square is the geographical and historical heart of Newport Rhode Island. More trapezoid than square, it exists at the intersection of several major streets and what was the colonial long wharf, projecting into the harbor off Aquidneck Island and into Narragansett Bay. Although as a civic space it is colonial in origin, dating back to the first settlement of 1639, much of its present shape, form and name dates from the 19th century while a number of its most prominent buildings are of early 20th century design. Like most great civic spaces, it developed over time rather than being imposed by design.
The first group of Anglo settlers – among them William Coddington, John Clarke, Henry Bull, and the Easton family each clustered their house lots of about 10 acres close to a fresh water spring and a short distance uphill from the shoreline. The spring still flows (although its course is now subterranean) but all the original houses are gone, the last, Henry Bull's, being destroyed by fire in 1912.
What remains from the areas 17th-century origins are adjacent street names (Coddington, Bull, Clarke, Dyer) and the street layout itself. Vectors lead along the residential hill and harbor (Thames Street, Spring Street), up island (Broadway) and northwest, out of town, toward the Common Burying Ground established by the 1660s (the aptly named cortege route of Farewell Street). These don't quite converge at the square but instead enter at various points onto an open space flanked by both residential and institutional buildings. By the nineteenth century, this spot came to be known as "The Parade" and became a more defined, park-like area with boundary fencing, trees, fountain and a bronze sculpture of one of Newport's military heroes, Oliver Hazard Perry.
Two of colonial America's most significant buildings are at either end of the square, Newport's Colony House, built by Richard Munday (1739) and the Brick Market designed by Peter Harrison (1772); as a public space, this "square" contained two important civic symbols: the impressively ornate seat of the colonial government and a fashionable Georgian symbol of Newport's economic success.