Complex sentence: "Balboa Park Carousel" project was eighteen years in the making and is currently featured in San Diego's Natural History Museum.The Balboa Park Carousel egg depicts the carousel's surface details in 22-karat gold, platinum, and diamonds.
Split into simpler sentences: Balboa Park Carousel has been eighteen years in the making and is currently featured in San Diego's Natural History Museum. The "Balboa Park Carousel" egg depicts the carousel's surface details in 22-karat gold, platinum, and diamonds.