Tulsa's south side is popularly considered to be south of the Skelly Bypass (I-44), bounded on the south by the city of Bixby, on the west by the Arkansas River and the city of Jenks, and on the east by the city of Broken Arrow. Many new luxurious homes have been constructed here in the last few decades, as well as numerous apartments, in various price ranges. Land in the area is becoming scarce, however, and development now has begun to spread to neighboring Jenks and Bixby to the south and west, as well as Broken Arrow to the east. As a more affluent demographic has moved into the area, businesses tailored to such residents have also opened nearby. The city's largest automotive dealer strips are located along S. Memorial Dr. from 91st to 101st Streets and from 51st to 31st Streets. The Riverwalk Crossing Shopping Center, just over the river in Jenks at 96th st. includes a movie theater, fine dining, and shopping. Nearby lies the Oklahoma Aquarium, the only one in the state of Oklahoma. Local freshwater fish are complemented by a fine selection of saltwater animals, including sharks. The Karl and Beverly White National Fishing Tackle Museum has over 20,000 pieces valued at more than $4 million. This exhibit makes up the largest and most comprehensive antique fishing tackle collection in the world.