Conventus is a 350,000-square-foot medical office complex that is a centerpiece of the Buffalo Niagara Medical Campus. The seven-story building is a Class A office building that was designed to encourage collaboration among Medical Campus entities. The building, which includes two floors of below-grade parking with 332 spaces, includes two floors apiece for UBMD and Kaleida Health, along with a state-owned floor used by drug development company Athenex Inc.