Opening hours of Retreat center in Hillier, South Australia Opening hours of Retreat center in Hillier, South Australia Home / South Australia / Hillier / Retreat center Retreat center The Riverdell Spiritual Centre 51 Clifford Rd, Hillier SA 5116, Hillier, South Australia 5116 (08) 8523 1329 Categories of local businesses in Hillier Animal shelter Cattery Construction & Contractors Floor refinishing service Flooring store Food & Drink Home & Gardens Industry & Agriculture Kennel Mailing service Plant nursery Powder coating service Retreat center Wedding venue Wholesale plant nursery