Whether you'd like to offer up a prayer or learn more about the story behind the building, Basilica of the Sacred Heart is a popular site to visit. Check to see if this holy place is open to tourists to experience the peace and quiet inside.
When you've spent a bit of time at this house of prayer in Ganshoren, why not make your way to La Grand Place, Atomium, and NATO Headquarters? They're not very far from Basilica of the Sacred Heart and also a hit with many travelers.