The Yerba Buena Gardens encompass two city blocks inside San Francisco. The peaceful Esplanade consists of 5 1/2 acres of flowers and majestic trees and meadows. Past a 50-foot waterfall stands the Martin Luther King, Jr. Memorial featuring the famous activist's carved image. You can pay tribute to Native Americans at the Ohlone Indian Memorial, and relax in the atmosphere of the Cho-En Butterfly Garden, where you can observe native varieties of butterflies. The rooftop area features ice skating, rides on a carousel, bowling and is a great choice for kids.