High Quality Content by WIKIPEDIA articles! Rackleff Building is a historic structure located at 127, 129, 131, 133 Middle Street in Portland, Maine. Designed by architect George M. Harding, it was constructed in 1867. On May 09, 1973 it was added to the National Register of Historic Places. Portland is the largest city in the U.S. state of Maine and the county seat of Cumberland County. The 2007 estimated city population was 62,875. Portland is Maine's cultural, social and economic capital. It is also the principal city of the Portland-South Portland-Biddeford metropolitan area, with a population of 513,102, which includes Cumberland, York, and Sagadahoc counties. Tourists are drawn to Portland's historic Old Port district along Portland Harbor, which is at the mouth of the Fore River and part of Casco Bay, and the Arts District, which runs along Congress Street in the center of the city. Portland Head Light in nearby Cape Elizabeth is also a popular tourist draw.