Our guide, Radje (sp?), was very knowledgeable and organized. We saw so many architectural details in Union Sq. restaurants, bars, and hotels that we never would have found on our own. And we come every year in October to the city. From beautiful cove ceilings to art deco bars to modern abstract paintings, it was all a delight. We learned some history too, and she got us to look up in Chinatown in order to see the colorful curving Chinese roofs. Definitely worth it.