Liège, as the first city to have effectively opposed the invaders in 1914, was chosen in 1925 by the Interallied Federation of Veterans (FIDAC) as the location for the construction of an interallied monument, financed by public and private subscriptions. in allied countries. Its design was entrusted to the Antwerp architect Joseph Smolderen, and the work which began in September 1928 on Cointe hill stopped, unfinished, in 1935. The religious building, the first, was blessed and dedicated to the Sacred Heart in 1936. The civil monument was inaugurated on July 20, 1937 in the presence of King Leopold III.
The Belgian state, which became owner of the tower in 1949, carried out restoration work in 1962, the site having been severely affected by aerial bombings during the Second World War. The work was completed in 1968: on November 20, King Baudouin I carried out a new and second inauguration.
Since 1985, the tower and the church have been open to the public, but only three times a year (Pentecost weekend, heritage days and the Belgian national holiday.