Old Towne Orange Historic District, Historic district in Orange, US.

Old Towne Orange Historic District is a one-square-mile neighborhood containing more than 1,300 buildings constructed between 1874 and 1940. Victorian, Craftsman, and Spanish Colonial Revival architectural styles dominate these structures, which center around Plaza Park.

The district was listed on the National Register of Historic Places in 1997, making it the largest National Register District in California. It grew around Plaza Park after the city's incorporation and includes Orange County's oldest operating bank. The Old Towne Preservation Association, a non-profit, works to maintain the district.

The Orange International Street Fair has been held every Labor Day weekend since 1973, when the inaugural event marked the city's centennial and recalled the 1910 Orange Street Fair. It covers the Plaza, Chapman Avenue and Glassell Street, with international food and drink, live music and showcases for local businesses and non-profits, drawing several hundred thousand attendees over the weekend.

The district stretches from Walnut Avenue to La Veta Avenue and from Batavia Street to Cambridge Street, with Plaza Park as the central landmark. Walking is the best way to explore the area and spot the different architectural styles found on nearly every block.

The district is the largest National Register district in California, yet the state's historic resource surveys rank Orange second in the state for concentration of historic buildings, behind only one other city. The Old Towne Preservation Association, a non-profit, works to maintain the district.