There were two unusual structures built in Prospect Park in its early years. The first was a camera obscura booth located on Breeze Hill's western slope, at the east end of the park, built in the early 1880s. The second was the Circular Yacht or Rotary Yacht, a floating carousel with yacht-shaped vehicles. Located near the Long Meadow, the Circular Yacht was constructed by inventor David Smith in 1878 and could hold up to 220 people at once. These structures were both demolished before the 1900s, and the camera obscura later became the site of the now-demolished Old Fashioned Flower Garden.