The Experience Climb from the Castro District to Twin Peaks—and back—in just three short hours. You’ll summit three hilltops with panoramic views of the city, bridges, and bay. Where On your tour, you’ll learn the history of the Castro, visit a late 1800s mansion, slide down the Seward Street Slides, take an unmarked hiking trail to Twin Peaks, stand at the tallest point in the city, and discover a peaceful eucalyptus forest. Peppered into this tour are scenic stairways, a dirt road, and beautiful homes.