Chicago offers many attractions for visitors on leave, from cultural sites to sports. Military history buffs can tour the captured German submarine U-505 on display at the Museum of Science and Industry. Visitors can also enjoy panoramic views of the city from the Willis Tower Skydeck or Navy Pier Ferris wheel. For food, popular deep-dish pizza places like Gino's, Lou Malnati's and Giordano's serve slices so loaded with toppings that diners may need a fork.