Twin Peaks, named for a pair of 922-foot-high summits, is a remote residential neighborhood with modern homes densely packed on steep lots along winding streets. A grassy 64-acre hilltop park is a popular attraction, with its hiking trails leading up to wind-swept peaks and 360-degree views of the Bay Area. The triple-pronged Sutro Tower antenna that soars over the neighborhood is a fixture in the skyline.It is an iconic viewpoint to look at downtown San Francisco.