According to the Roosevelt Island Twitterverse:
The oldest and newest buildings on Roosevelt Island in one shot. https://t.co/Xylj15GCRK pic.twitter.com/c7CG9KIMnX
Nick Turner (@SFNick) September 6, 2015
More info on Blackwell House (built in 1796) and Riverwalk Point (AKA Riverwalk building 7, built in 2015).