Auckland's Sky Tower is glowing orange tonight until Sunday, in support of Kiwis doing the 40-hour famine to raise money for World Vision this weekend.

This year, money raised will fund World Vision's child-friendly spaces in Jordan where the organisation is providing critical support to children caught in the Syrian refugee crisis.

"The spaces are safe places for children who have fled conflict so they can start to heal from their trauma," according to World Vision.

"Through arts, music, sports and play, and most importantly education, they can help prevent an entire generation on missing out on the opportunity to build a better future."