For the finest shopping experience, head to the twin communities of Nichols Hills and the Village, which hold a multitude of upscale boutiques and luxury services. Outlets like Penn Square Mall and 50 Penn Place carry only the most ultra-chic goods. This is the place to be seen and definitely the most exclusive area in the city. The larger northwest district revolves largely around one major thoroughfare: the Northwest Expressway. Not really a "neighborhood" per se, the street is synonymous with the district, as it cuts through the entire northwest side of the city and is home to many of OKC's dining and shopping treasures. Aside from Bricktown, no other area of the city compares to it in the concentration of commerce and interchange. The area also holds entertainment attractions like the Oklahoma City Art Museum and State Fair Park, as well as outdoor retreats like Hefner Lake, Martin Park Nature Center and Will Rogers Park.