Just behind the Mandarin Oriental and only a block from the Chao Phraya River, O.P. Place offers a wealth of antiques and decorative Asian arts for discerning collectors and admiring browsers alike. The opulent building houses nearly 60 boutiques specializing in rugs, jewelry, leather goods, paintings and beyond. If you require a respite from your adventures in artful retail, a coffee shop on the second floor balcony is your source for refreshments (and a spot to rest your feet).