I went to Ciudad de los Niños when I was ten and had a blast. What I remember most is how committed they are to the different "jobs" you can play. As doctors, you and your friends pile into the back of a van-sized ambulance and get driven to the site of an "accident" (a kid lying spreadeagle near the go-kart track). You lift him into the vanbulance, drive him back to the hospital, and then "revive" him with prop defibrillator. There's a counselor there to guide the experience, but he plays the part a panicky nurse who desperately needs your help to save this kid's life.

The tiny buildings and costumes set the mood, but it's really the people who make this park possible.