EPPING — An Epping boy battling a rare medical condition will get a big gift Wednesday when the Make-A-Wish Foundation of New Hampshire grants its 1,000th wish — a two-story castle being built in his backyard.

At a ceremony fit for a king, 12-year-old David Morasco will get his first look at the finished castle while joined by his entire seventh-grade class at Epping Middle School along with Gov. John Lynch, other elected officials and representatives from the Make-A-Wish Foundation, sponsor New Hampshire Credit Union League and other corporate partners and volunteers.

David has spent the past five years battling desmoid fibromatosis, a rare condition that caused a benign fibroid tumor in his upper right arm.

While the tumor is benign, it is aggressive and if left untreated could create other serious health problems. David underwent five surgeries and a year of chemotherapy, but the tumor has proved difficult to treat. He is now six months into another year of chemotherapy, according to his parents, Mike and Kristin Morasco.

David’s wish was to have a castle in his yard, so work began a few months ago to construct a 24-foot by 24-foot castle with a wood frame and stone face.

“We’re just normal people doing normal things, and we’re doing the best we can with what we have,” Mike Morasco said. “These people came by to provide this hope while he’s going through crazy stuff. It’s just been a blessing, he said of the Make-A-Wish Foundation and those who have helped make his son’s wish a reality.

The castle will be the 1,000th wish granted by the foundation, and it will mark the 25th anniversary of its first wish — granted in January 1987 to a young boy with brain cancer who wanted electronics and the game Pong.

“It’s amazing to us that we’re hitting this great milestone,” said Julie Baron, president and CEO of Make-A-Wish Foundation of New Hampshire,

Baron said this is the first time a child has wished for a castle.

David has been able to watch some of the early castle construction, but with the structure now almost finished, a tarp has been put up to block the view until the castle is revealed for the first time Wednesday.

“He saw all the beginnings, but we’re keeping him away from it so he can’t see it,” Baron said.

David offered his input for the castle, creating a drawing that showed what he wanted it to look like and picking the stones that will be used on the outside.

In keeping with the theme, some attending the event will dress in period clothing.

“Thanks to generosity we’ve been able to grant more and more wishes,” Baron said.

Some of that generosity has come from the New Hampshire Credit Union League, which sponsored the castle wish and has spent years raising money to support the foundation.

“Over the years, I’ve seen a wide range of wishes granted for these kids and their families. …We’re very pleased to help them expand their mission. It’s all about the kids,” said Michael L’Ecuyer, president and CEO of Bellwether Community Credit Union and chairman of the board of directors for the New Hampshire Credit Union League.