As fans of Woody Allen's film “Vicky Cristina Barcelona” might recall, this amusement park has some charming retro rides—a carousel, an “airplane” that spins around a pole, whirling teacups—along with modern attractions like a roller coaster, a pirate ship, and a haunted castle. A family visit can be fairly expensive, but you may be able to limit costs by focusing on the Sky Walk section of the park and the adjacent 255m (837-ft.) communications tower, Torre de Collserola, with its observation deck.