On 3 August 1914,
Germany declared war on France and Belgium, and the following day German troops invaded Belgium to advance towards Paris, triggering the military campaign on the
Western Front in
World War I. The city of Liège, an important railway junction between Germany and France via
Brussels, was the first in which
the Belgian army resisted, aided by the city's belt of 12 forts. German troops attacked the city on 5 August, believing they would achieve an easy victory, but the Belgian defenders, though greatly outnumbered, held out heroically for 11 days, inflicting heavy losses on the invading forces. In 1925, after the war,
FIDAC (Inter-Allied Federation of Ex-Combatants) decided to build a monument dedicated to the memory of all those who lost their lives fighting on the side of the
Allied forces. The monument was supposed to be financed by public and private subscriptions in the Allied countries. Consequently, the FIDAC members agreed on Liège, as it had been the first city after the outbreak of war to be attacked and resist the enemy. Its dome was made of 13 tons of copper sheet from
Katanga, at that time a province of the
Belgian Congo colony, then rolled in the "Cuivre et Zinc" factories in
Chênée. The secular monument was inaugurated on 20 July 1937, in the presence of
King Leopold III. The
Belgian State, which became the owner of the tower in 1949, carried out restoration work from 1962 onwards, especially as the whole memorial had been damaged by aerial bombardment during
World War II. The church was desecrated in 2010, and its owner, the parish association "Monument régional du Sacré Cœur", which no longer has the funds to maintain and rehabilitate it, has announced that it is looking for a buyer. The building is in a visible state of disrepair. On 24 January 2011, the Sacré-Cœur church was listed under code 62063-CLT-0430-01 and included in the list of the Walloon Region's immovable heritage. Since 2000, the Cointe tunnel, an infrastructure work on the A602 motorway, has been crossing under the site. == Description ==