great cats and aerial views - View this location on map you must forgive the new superstars of the philadelphia zoo ( 215-243-1100; www.philadelphiazoo.org) for not getting up to greet you, but there have just been so many people visiting lately. a new $20 million exhibit, big cat falls, puts you eye to eye with lions, pumas, tigers and, even snow leopards. for a different view of the city, the zoo balloon rises 400 feet into the air on tethered lines, weather permitting hey, is that new jersey over there? (admission is $12.95 for adults and for children 2 to 11; children under 2 are free. balloon tickets are sold separately, $10 on weekends, $5 weekdays.) NYT 3400 west girard avenue, Philadelphia, PA Kids, Active

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