From south to north, the church building consists of a neo-Gothic portal surmounted by three church towers, a nave, a transept, a choir and an extension with a cone-shaped dome. Under this dome is the Royal Crypt. The middle of the three southern church towers is higher than the other two and has a height of 99 meters.
The church, which is a parish church, contains the mausoleum of Cardinal Cardijn, founder of the KAJ, then vicar in this church. The crypt contains the tombs of the Belgian royal family. The church also has a much venerated statue of the Virgin Mary from the thirteenth century, of which several copies were made, one to take with you in the processions and a non-polychrome statue, which is located in the parish church of Karreveld in Sint-Jans-Molenbeek. In the church there is also a statue of Saint Roch from the 18th century, a bust of Mgr. Van Waeyenberg (1891-1971), former rector of the Catholic University of Leuven. The baptismal font with polished copper lid and marble tub dates from 1754. A large stained glass window, in memory of the fallen soldiers during the war of 1914-1918, is located above the altar of Our Lady of the Seven Sorrows. In a small chapel there is also a polychrome statue of H.H. Anna-te-three. There is also a painting by Our Lady of Laken. In the central nave of the church is a monumental pulpit from the neo-Gothic era; in 1878 it was said to have won first prize at the World Exhibition in Paris.
Source: Wikipedia