3. Seagulls are not the most welcome visitors at the park

When the park first opened, seagulls would visit and leave a mess behind. Now, the park staff has found a clever, and invisible, solution to their avian visitor problem. Two nearly-invisible lines of fishing wire are suspended at the very edge of the island, across the top of the walls to the Room. These strings create a noise only noticeable – and very unpleasant — to the gulls, so that they stay away. The trick doesn’t always work, and some feathered friends are still seen spending their free time around the memorial, but it has brought some improvements to keeping the memorial a little cleaner.