Hydrangeas are one of the highlights of Japan's rainy season, and Nagasaki's Huis Ten Bosch theme park showcases thousands of them from late May throughout the month of June. Their annual hydrangea festival allows visitors to enjoy these beautiful blooms in a European-styled setting, and there will be hydrangea-themed foods and merchandise available for purchase. If you have a green thumb, you can even purchase plants at the hydrangea market to nurture at home.
A full list of the events and activities during the hydrangea festival can be found on the official Huis Ten Bosch website. Also, admission prices to the park differ depending on the pass you get, but a standard one-day adult admission is priced at 7000 yen. This doesn't just include the hydrangea festival, but the entire range of attractions the park offers.
But hey, as a true Dutchman I do live right next to a windmill! :-) (https://www.molendatabase.nl/nederland/molen.php?nummer=577)