250_delaware_avenue | location | united_states <tsp> united_states | leadername | barack_obama <sep> the delaware north building is a mixed-use development in buffalo, new york the 12-story, 330,000-square-foot mixed-use building features class a office space, a 120-room westin hotel, ground level retail, a 7,000-square-foot outdoor courtyard, and an adjacent structured parking ramp delaware north's world headquarters anchors the building 
250 delaware avenue is located in the united states. the leader of which was barack obama.no information