When you're a kid, visiting an amazing playground is the greatest experience ever. And these fantasy-themed playgrounds around the world have us wishing that we were kids again so we could run around in them like small, crazy people.

Parque Gulliver, Valencia, commissioned in 1990, designed by Sento Llobell

These are the most fantastical playgrounds ever built

These are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever built(via Google Maps, Robyn Lee and Dimitar Denev)

A public park in Kristineberg, Stockholm, Sweden, designed by MONSTRUM

These are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever built These are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever built(via MONSTRUM)

Nishi Rokugo Koen (Tire Park), with over 3,000 tires of varying sizes, Tokyo, Japan

These are the most fantastical playgrounds ever built

These are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever built(via QJPhotos and JapanTravel)

The Spire Playground of Copenhagen, the winner of Danish Design Award in 2012, designed by MONSTRUM

These are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever built(via MONSTRUM)

Kmelnytskyi City playground, Ukraine

These are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever built(via Izismile)

Buga 05 playground in Munich, Germany, designed by Rainer Schmidt Landschaftsarchitekten, 2005

These are the most fantastical playgrounds ever built

These are the most fantastical playgrounds ever built

These are the most fantastical playgrounds ever built(via Landezine)

The Monster in Bispeparken, Copenhagen, Denmark, designed by MONSTRUM

These are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever built(via MONSTRUM)

The Dragon Playground (Toa Payoh Lorong 6) in Singapore, designed by Khor Ean Ghee

These are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever built(via Pinterest and Cheekiemonkie)

The Bermuda Triangle in Nørrebroparken, Copenhagen, Denmark, designed by MONSTRUM

These are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever built(via MONSTRUM)

Bonus: The Rainbow Nest in Woods of Net, knitted by Toshiko Horiuchi MacAdam, a part of Hakone Open-Air Museum, Hakone, Japan

These are the most fantastical playgrounds ever builtThese are the most fantastical playgrounds ever built These are the most fantastical playgrounds ever built(via ArchDaily)