What’s the most memorable ceiling you’ve seen? This sublimely sculptural design by Greek-Australian architect Angelo Candalepas is certainly up there. It is the ceiling of the main prayer space in the Punchbowl Mosque in Sydney—for which Candalepas was awarded the 2018 Sir John Sulman Medal—and comprises some 102 domes which offer a modern take on muqarnas, a form of ornamented vaulting traditional to Islamic architecture. Each one is pierced by a 30mm diameter hole in its centre, flooding the space with shafts of sunlight from different angles as sun moves around the building.