What kind of shrub is it? resembles butterfly bush?

There's a big plant that I pass by on my way to work and I can't figure out what it is. It looks like a butterfly bush because of the flowers. They're a bunch of small guys together just like the butterfly bush. BUT the leaves are wide, dark, and big. The leaves aren't small and thin like the butterfly bush or chaste tree, or round like a crepe myrtle. The leaves are more maple-shaped I guess you could say. Anyone have an idea of what it is? It's been in bloom since at least the beginning of May.