The Hanging Church is named for its location above a gatehouse of Babylon Fortress, the Roman fortress in Coptic Cairo (Old Cairo); its nave is suspended over a passage.[2] The church is approached by twenty-nine steps; early travelers to Cairo dubbed it "the Staircase Church".[2] The land surface has risen by some six metres since the Roman period, so the Roman tower is mostly buried below ground, reducing the visual impact of the church's elevated position.[citation needed]