The Montauk lighthouse at Montauk point Long Island New York is missing.
Orange County Fairgrounds in Middletown New York is missing, it is a half mile dirt track.
Seoul Tower in Seoul South Korea is missing.
I don’t think there are currently any lighthouses on the East Coast, but I haven’t been back there in the sim since the update. Missing features are a Zendesk issue, but I think you’d have better luck getting one of the freeware scenery authors to make them.