Grand Opening of Bass Pro Shops Outdoor World with a 40,000-gallon aquarium, waterfall, a stream stocked with fish meandering through the store, climbing wall, NASCAR display, archery and pistol ranges and a marine and boat showroom. This store promises to be a must see at the Silverton. At the same time a live mermaid show every two hours, in a huge 119,000-gallon salt water tank called the Mermaid Bar, will be opening in the Silverton.