The stairwell of the Maine Medical Center parking garage is clearly visible from Congress Street. In the early 1970s, Maine Medical Center undertook the construction of a new, multi-story parking garage. Building crews spent a year creating the infrastructure to support the new construction, installing pipe and conduits, building roads, even changing the topography of the site. A portion of Bramhall Hill was cut away in order to level a lot on which to erect the new parking garage. The earthmoving created a six-story cliff overlooking Congress Street. MMC’s facilities engineers designed a 200-foot-long, 65-foot-high retaining wall as part of an earth retention system.