If you give us a hint as to what you and your girlfriend like to do I may be able to be helpful. As for horological vices I suggest what I call the 1.5 hour watch tour (but I suggest you wear a gen). In an hour and a half you can cover quite a bit. Within 2-3 blocks of each other are boutiques for Panerai, FM, AP, Montblanc, Jacob (if so inclined), and one of the grande dame watch stores of all time - Wempe. Tourneau and Cellini are in the same area. Turn in the other direction and six blocks up are Breguet,Chopard, FP Journe, etc. Head South for a few blocks and you can hit 47th Street which is a whole other kettle of fish but carries all the higher end folks in various shops and sizes in addition to the regular stuff. Everything from Uhrwerk, Ulysses Nardin, etc.