Do not try this at home — not that your home can accomodate a stunt like this. 

The Basilica of the Sacred Heart (Koekelberg Basilica) in Brussels, Belgium stands 292 feet tall at its highest point and can accomodate a capacity congregation of 2,000 people.

It is the fifth largest church and the largest Art Deco building in the world.

None of which makes this interior BASE jump, featured at Adventure Journal, any less insane.