The National Basilica of the Sacred Heart is a Roman Catholic Minor Basilica and parish church in Brussels, Belgium. The church is dedicated to the Sacred Heart, inspired by the Basilique du Sacré-Coeur in Paris. Symbolically, King Leopold II laid the first stone of the basilica in 1905 during the celebrations of the 75th anniversary of Belgian independence. The construction was halted by the two World Wars and finished only in 1969. Belonging to the Metropolitan Archbishopric of Mechelen-Brussels, it is one of the ten largest Roman Catholic churches by area in the world.

The massive brick and concrete reinforced church features two thin towers and a green copper dome that rises 89 metres (292 ft) above the ground, dominating Brussels’ northwestern skyline. It is served by Simonis metro station on lines 2 and 6 of the Brussels metro.

The Basilica, on the Koekelberg Hill, is a landmark on the Brussels skyline. The cupola platform affords an excellent city panoramic view of Brussels and the wider area of Flemish-Brabant. Visitors can reach the platform either by stairs or by two elevators commissioned in the spring of 2012, in the form of a cage and two fully glazed cabins.