Originally, the Orange Line level had an underground concourse with several direct access points to basement entrances of various stores in the district, such as Jordan Marsh (now Macy's) and the former Filene's department store. In 1979, the Winter Street Concourse was opened, connecting the upper level of Downtown Crossing station (inside fare control) to the upper level of Park Street station two blocks away, utilizing an existing but previously unopened section of the concourse. Both levels of the station were substantially renovated and accessibility was improved in the mid-1980s. The 101 Arch Street building, completed in 1989, included access to the Summer Street concourse (including an elevator) through its basement level. By 1991, a 1914-installed wooden escalator in the station was the oldest operating escalator in the world.