Heiwadai Park (平和台公園) or Miyazaki Peace Park is a municipal park in Miyazaki, Miyazaki on Japan's Kyushu Island. A popular honeymoon destination for Japanese couples, the park's Peace Tower has generated controversy because of its place in Japanese history.

Heiwadai Park is located in the Shimokitagata-cho region of Miyazaki City.^[1] It has an area of 68.8 hectares (0.266 sq mi). The park houses the Miyazaki Shrine, which is devoted to Emperor Jimmu who by legend is from the Miyazaki region.^[2]

The park was constructed in 1939 to commemorate the 2600th anniversary of Japan's Imperial establishment.^[1] The Hakko Ichiu tower, later renamed the Peace Tower, was built in 1940.^[3] When princess Takako Shimazu honeymooned there in 1960, the park became a favorite destination for Japanese newlyweds.^[3] Hibiya Park was designated Heiwadai's sister park in 1965, in a ceremony in which Heiwadai received doves from Hibiya.^[1]

The Haniwa Garden, 9,000 square metres (2.2 acres) in size, is located north of the Peace Tower. A central feature of the Haniwa Garden is more than 400 haniwa (terracotta clay figures) which are placed along paths within the garden.^[2] These are earthenware replicas of burial haniwa originally excavated at the site.^[1] These figures take the form of animals, boats, dancers, houses, and warriors.^[2]

A 36-metre (118 ft) tower was constructed in 1940 to memorialize the installment of Japan's first emperor, Jimmu.^[3] The original name was Hakkō ichiu Tower, meaning "Eight World Regions Under One Roof," a slogan of the Imperial Japanese Army.^[2] Designed by Jitsuzo Hinago, the tower was created from stones gathered from around the then-current extent of the Japanese empire at a cost of 670,000 yen.^[3][1] The writing "Hakkō ichiu" was removed after the Japanese defeat at the insistence of the U.S. military.^[3] The tower was the inception point for the torch relay of the 1964 Summer Olympics.^[3] Subsequent to the Olympics, which coincided with worldwide interest in the Japanese Imperial family, the local tourism association successfully petitioned the Miyazaki Prefecture to re-install the "Hakkō ichiu" characters.^[3]

The tower has been a point of some controversy, as many Japanese citizens wonder how a structure created specifically to convey Japanese might during a period of conquest can now be a symbol for peace.^[3] Some people consider the lack of documentation regarding the militaristic genesis of the tower to subtract from the structure's re-imagined power as a symbol for peace.^[3] Other survivors of the period have stated that the tower allows the horrors of war to be passed down through generations.^[3]