Rin Rin Garden, also known as Koi Aquarium, is located in Hoc Mun District of Ho Chi Minh City. It is the first typical Japanese Zen garden in Vietnam. It was officially opened in 2014. It covers an area of 20,000 square meters and is designed based on three Factors; Stone, fish and tree, with the aim of creating a green space typical of Japanese culture, most of the raw materials that decorate the garden were imported from Japan, including more than 4,000 tons of rocks of different colors and shapes.