Osaka Maishima Seaside Park

In short

A flower field park on Maishima, an artificial island in Osaka Bay, which opens for the spring "Nemophila Festival." The festival is usually held from early April to around Golden Week (in 2026, from April 11 to May 10), and outside the festival period, entry into the park is not permitted. During the 2026 festival, one million nemophila plants bloomed across an area of approximately 44,000 square meters.

• ​Blue of the Sea, Sky, and Flowers​​: Swaying in the sea breeze with the ocean behind them, the nemophila paint the entire landscape a vivid blue. The scenery where the blue of the flowers overlaps with the blue of the sea and sky is the park's greatest highlight
• ​Rurikarakusa​​: Nemophila is an annual plant native to North America, known in Japanese as rurikarakusa, and in English it is called "baby blue eyes"
• ​Evening Flower Fields​​: In 2026, the park remained open until late evening on Saturdays, Sundays, and public holidays, allowing visitors to enjoy the nemophila glowing in the setting sun. Because it closes in the evening on weekdays, visitors seeking the sunset views should check the opening hours for that year before visiting

History and Highlights

​Osaka Maishima Seaside Park​ is a flower field park located on Maishima, an artificial island in Osaka Bay, which opens specifically for the spring Nemophila Festival. The festival is usually held from early April to around Golden Week, and in 2026, it ran from April 11 to May 10. Outside the festival period, entry into the park is not permitted.

Originally the site of "Osaka Maishima Yuri-en" (lily garden), it was reborn as Osaka Maishima Seaside Park on April 13, 2019, when the Nemophila Festival began. It is situated on the island adjacent to Yumeshima, where Expo 2025 Osaka, Kansai was held.

Nemophila is an annual plant native to North America, known in Japanese as rurikarakusa. It grows to a height of about 20 centimeters, spreading horizontally and blooming with sky-blue flowers. In English, it is called "baby blue eyes." During the 2026 festival, one million nemophila plants bloomed across an area of approximately 44,000 square meters.

Viewing and Experience Highlights

• ​Blue of the Sea, Sky, and Flowers​​: Swaying in the sea breeze with the ocean behind them, the nemophila paint the entire landscape a vivid blue. The scenery where the blue of the flowers overlaps with the blue of the sea and sky is the park's greatest highlight.
• ​Combinations with Seasonal Flowers​​: At the 2026 festival, there were also areas combining nemophila with seasonal flowers such as cherry blossoms and tulips. The condition of the blooms varies depending on the climate and temperature of each year.
• ​Evening Flower Fields​​: In 2026, the park remained open until late evening on Saturdays, Sundays, and public holidays, allowing visitors to enjoy the nemophila glowing in the setting sun. Because it closes in the evening on weekdays, visitors seeking the sunset views should check the opening hours for that year before visiting.

Tips for Exploring

The paths within the park are paved, but there are gentle slopes. It is recommended to visit wearing comfortable shoes that you do not mind getting dirty. There are no restrooms inside the park; they are located next to the entrance. The park may close on days with rough weather or strong winds. At the 2026 festival, there was a limited blue soft-serve ice cream called "Blue Eye," as well as merchandise featuring "Nemonyan," the festival's official character. If traveling by train, take a bus from Sakurajima Station on the JR Yumesaki Line. Pottery making can be experienced at the nearby Maishima Craft House, which also features a café. About 1.7 kilometers to the east stands the Maishima Incineration Plant, whose exterior was designed by Friedensreich Hundertwasser.