Across Cathedral Street to the northeast was the 1820s era Greek Revival style home with large front columns, designed by Robert Mills (who also did the iconic landmark Washington Monument two blocks away) which later was occupied by the original Maryland Club, an exclusive Southern-leaning dining and leisure society of gentlemen, founded 1857 that was once threatened by Massachusetts State Militia commander, Gen. Benjamin F. Butler, U.S.A. when he occupied Baltimore on May 13, 1861, a month after the infamous "Pratt Street Riots", when mobs of Southern sympathizing Baltimoreans attacked passing state militia from Massachusetts and Pennsylvania at the beginning of the Civil War on Thursday/Friday, April 18-19th. General Butler's troops fortified Federal Hill with a battery redoubt named Fort Federal Hill and with numerous cannons overlooking the harbor basin (later renamed "Inner Harbor" in the 1960s) and surrounding city, "to put a shot into it" if he spied a reputed rebel flag flying or any discontent to the Union Army declared martial law. The Club later moved a few city blocks further north to North Charles and East Eager Streets in 1892 and the Cathedral and Franklin mansion was later replaced in 1907-08 by the former Central Building of the Young Men's Christian Association of Central Maryland (YMCA) which was closed in 1984 and the building renovated as the Mount Vernon Hotel and Café, and again subsequently as the Hotel Indigo in 2017.