Manhattan real estate watchers and architecture heads have been watching 8 Spruce Street, in the Financial District, for some time now. After years of anticipation, a host of name changes, and a much-watched construction process, there's at long last something to see at 8 Spruce Street -- a masterpiece of a Manhattan luxury rental, which goes by the name Beekman Tower, and is the first Manhattan rental development by Pritzker Prize-winning architect Frank Gehry.