• Free bike loans for one hour, after a one-time sign-up with an original ID at an information point; kids' bikes and child seats are handed out there too
• Free park train on a 30-minute loop, running on weekends and holidays only from November to March
• Big and spread out: Feria de Madrid metro (L8) is on the west edge and the play areas are scattered around the ring

Parque Juan Carlos I spreads over 160 hectares around a one-kilometer ring, with a 1.9 km ría crossed by footbridges, a lake, an old olive grove and 19 giant outdoor sculptures. Kids get several play areas, including a wooden pirate ship, plus fountains and water jets, a mini train and bike loans, so it suits a whole morning on wheels.