Eucalyptus ficifolia hybrid (Corymbia species)
This tree is obviously drought and frost hardy here and grows in alkaline soil, which breaks all the rules if the books are to be believed. The issue is, I think, that many species are quite adaptable and noone has the full story on all species. This tree is one of those. It has large fruits which are urn shaped and very decorative. Many use them for crafts and they are fun to create things with children.