The facade of the church is very ordinary and looks a little rough, but this is what the Italian church looks like in general. The church is funded by the Medici family, and part of it (Sagrestia Vecchia is said to be the little dome next to it) was designed by Brunelleschi, which is also the most worthwhile place to visit. Michelangelo is said to have redesigned the facade for the church, but It was not built for various reasons.