The Best Sight in San Diego, California

Balboa Park's—and perhaps the city's—most famous attraction is its 100-acre zoo. More than 12,000 animals of some 680 diverse species roam in hospitable, expertly crafted habitats that replicate natural environments as closely as possible. Pandas just made their grand return to the zoo after a five-year hiatus and are a popular attraction. The flora in the zoo, including many rare species, is even more dear than the fauna. Walkways wind over bridges and past waterfalls ringed with tropical ferns; elephants in a sandy plateau roam so close you're tempted to pet them.

Exploring the zoo fully requires the stamina of a healthy hiker, but open-air, double-decker buses that run throughout the day let you zip through three-quarters of the exhibits on a guided 35-minute, 3-mile tour. The Skyfari Aerial Tram, which soars 170 feet above the ground, gives a good overview of the zoo's layout and, on clear days, a panorama of the park, Downtown San Diego, the bay, and the ocean, far beyond the San Diego–Coronado Bridge.

Unless you come early, expect to wait for the tour bus, and especially for the top tier—the line can take more than 45 minutes; if you come at midday on a weekend or school holiday, you'll be doing the in-line shuffle for a while. Don't forget the San Diego Zoo Safari Park, the zoo's 1,800-acre extension to the north at Escondido.