Six fire engines and around 40 firefighters were called to a fire at an adventure playground on Crowland Road in Tottenham.
An external three storey adventure playground was destroyed by the blaze and part of the external fascia of a single storey café was also damaged by fire. There were no reports of any injuries.
The Brigade was called at 0455 and the fire was under control by 0650. Fire crews from Tottenham, Walthamstow and Stoke Newington fire stations attended the scene.
The cause of the fire is under investigation.