Save 46% off admission to Eastern State, plus 4 more top Philadelphia attractions: Philadelphia Trolley Works & The Big Bus Company, Adventure Aquarium, and Philadelphia Zoo OR National Constitution Center. You'll skip most ticket lines, too. Valid 9 days. Cost: Adult $62 (value $115.30); Child (2-12) $39 (value $79.80). Purchase booklets or printable vouchers online or at Eastern State Admissions for the same low price.