You can admire the artwork at the de Young Museum, but you sure can't ride it. Built in 1914, the carrousel in Golden Gate Park made the rounds at the World's Fair on Treasure Island before settling in as the park's interactive artistic masterpiece in 1940. The whimsical animals double as works of art — an exotic Bengal tiger with a mermaid-adorned saddle, a roaring dragon with a seahorse tail, a ram rearing on its back legs, a flaming rooster. The carrousel starts whirling on Memorial Day and keeps spinning round like a record until Labor Day. Kids under six ride free; kids 6 to 12 pay $1; the young at heart pay $2. The cheap thrills in life are the ones you'll remember.