During the Civil War, the old British soldiers’ barracks were used as temporary barracks. Between 1869 and 1880, the City Hall Post Office and Courthouse was erected at the southern end of City Hall Park; the building was not well received and was destroyed in 1939. The Tweed Courthouse was also built at the north end of City Hall Park at the same time, being completed in 1881. Though the building had begun construction in 1861, work on the building stopped between 1872 and 1877 after the downfall of its patron Boss Tweed and the death of its primary architect.