The City Hall dome will be lit up in blue Sunday night in honor of Mother Teresa, who was declared a saint Sunday.
Pope Francis canonized Mother Teresa, who devoted her life to helping the poor in India and around the world, before thousands at St. Peter's Square in Vatican City.
Baltimore Mayor Stephanie Rawlings-Blake ordered the lighting for 7:30 p.m.
Mother Teresa twice visited Baltimore, first in 1992 for the dedication of a hospice for AIDS patients in East Baltimore and again in 1996 to visit the headquarters of Catholic Relief Services.
Baltimore is considered the birthplace of Catholicism in the United States because it is where John Carroll established the first diocese of the church in the United States. The Basilica of the National Shrine of the Assumption of the Blessed Virgin Mary in Baltimore is the country's first cathedral.