construction. A b 2 "325. "Wyndham Inner Harbor Hotel South". Tallest under construction or proposed edit This lists buildings that are under construction or proposed for construction in Baltimore and are planned to rise at least 300 feet (91 m but are not yet completed structures. 32 - Site cleared. Beaux Arts classical Revival architecture of the, baltimore City Courthouse of and the landmark, battle Monument in Battle Monument Square, commemorating the fallen in the defense of the City against the British attack in the 1814. "High-rise Buildings of Baltimore". The tallest building in Baltimore is the 40- story, transamerica Tower, which rises 529 feet (161 m) and was completed in 1973. But with the proposals by the major business, commercial and industrial interests of the area with the release of the Charles Center project proposal by the recently organized Greater Baltimore Committee and the local Chamber of Commerce with the leadership. The city therefore had two tallest buildings until the B O Railroad Grain Terminal was completed in 1923.