CHRYSLER BUILDING Of the countless skyscrapers visible from the Empire State Building’s observation deck, this one may be the most romantic. The Chrysler Building is a true Art Deco monument, its polished chromium nickel gleaming even when the sky’s cloudy. Keep your eyes peeled for the stainless-steel eagle gargoyles roosting on the 59th and 61st floors.   SAINT PATRICK’S CATHEDRAL Located across from Rockefeller Center, St. Patrick’s Cathedral is one of the city’s most spectacular architectural sights, modeled in a mélange of Gothic revival styles with two soaring, 330-foot-tall spires.   ROCKEFELLER PLAZA This nineteen-building complex in midtown is rife with photo opportunities. Around the winter holidays, there is the Art Deco GE building and its adjoining sunken ice rink overseen by Paul Manship’s golden statue Prometheus — not to mention the enormous Christmas tree and Radio City Music Hall’s brightly lit façade. Views of the Empire State Building and far beyond beckon from the 70th-floor viewing platform, known as Top of the Rock.