The Sydney Odditorium is a unique shop in Sydney with a vast collection of authentic rocks, fossils, crystals, and oddities. The knowledgeable and friendly owner provides excellent customer service and shares interesting information about the items. The shop has a wide variety of unique and one-of-a-kind items, including Greek proto coins, taxidermy, and porcupine quills. Some visitors even mentioned witnessing magic tricks. The shopping experience is educational, positive, and enjoyable for both adults and children.