The Temple, that has a self manifest idol of Hanuman, has an abnormal aspect fastened while in the spire (Shikhara) in the form of the crescent moon as an alternative to the Hindu symbol of Aum or Sunshine that is commonly found in the majority of Hindu temples. From the https://hanumanmandirwellington.org.nz/why-hanuman-temple-in-newtown-is-a-must-visit/