The “Wallholla” playground, designed by the Dutch company, Carve, continues to gain popularity since it was first designed in 2005. The original Wallholla developed when the city council of Purmerend, in the Netherlands, invited Carve to design a new schoolyard area. Among the long list of requirements were climbing and play activities to accommodate 60 children at a time and a large soccer field.

This vertical urban play structure combines several functions including different types of play and climbing opportunities as well as a fence for a basketball court or a goal for the soccer field. From this basic modular design developed three standard sizes and many component options such as slides, climbing walls, sliding poles and climbing nets and ropes.