In Osakasayama City, there are over 140 ponds, with Sayama Pond boasting the largest area of all. Constructed in the former half of the 7th century, the pond exists today as the oldest one in Japan. Of course, Sayama Pond has been used for irrigation, but it has also become known as a place of scenic beauty. In 1946 the pond became designated as Osaka's first historic spot and scenic location. It is truly fitting as the symbol of Osakasayama City.
The pond's surrounding area is preserved as a park, with a circulating route of about 2,850 meters. Filled to the brim with water, Sayama Pond makes for a spectacular view from the northern bank, where one can even gaze as far as Osaka city. The park is regularly used for leisurely walks and running. The Sayamaike Museum nearby that was designed by world-renown architect, Tadao Ando, is a building that exists in unity with the pond, expressing the image of water. It is even considered a landmark of the town.
Sayama Pond is also a paradise for wild birds, aquatic life and other living things. There are over 50 species of wild birds to be seen, including the spot-billed ducks. widgeons and Japanese wagtails. The park is also visited by rarer wild birds such as kingfishers, tufted ducks and fan-tailed warblers.
In addition, there are many flowers in the park which attract butterflies. To aid their reproduction and growth, there is a "butterfly garden" filled with edible plants for them, with of 18 species of 330 nectar plants producing flowers and 26 species of 200 edible plants. It is possible to see 40 kinds of butterfly in a year. Colorful flowers of the four seasons bloom throughout the year in the garden, with the butterflies dancing among them. The garden is the perfect place of recreation for people walking in the park, as well as an environment for children to learn about nature.
Sayama Pond is also known as a famous spot for cherry blossoms, with about 1,300 trees planted around the pond and museum. Most of the cherry blossoms are of the koshino-higan variety, known for its early blossoming. It can be fully appreciated in full bloom around the end of March.