Ten-year-old Nathan Pons thinks he knows what the sand sculpture in Central Parklet will be when it's finished.

"It looks like a space fort to me," he said. He hopes that's what it is, because a spacefort would be "the coolest."

Nathan and his parents, Kathy and John Pons, are from State College and have been attending the Children's Day of the Central Pennsylvania Festival of the Arts for years.

"You see everyone you know in State College with kids on Children's Day. It's kind of like a warmup for the rest of the festival," John Pons said. "It gives the organizers a chance to see what the rest of the week will be like."

The Pons family is familiar with Brad Goll's sand sculpting, and they come to Central Parklet every day of Arts Fest to see how he is doing and what progress he has made.

Cathy Pons said his sculptures always stick to a theme, and that in the past, he's done cartoons, scenes from the '70s and '80s, and toys.

She said that their family always tries to guess what the sculpture is, but their insights are "usually wrong."

She also noted that she is amazed at how Goll is able to envision his sculptures in proper proportion.

John Pons noted how tough it is to work with something as delicate as sand, marveling at Goll's work.

"You have to be able to conceptualize what you're doing, and sand is such a tough medium to work with in art," John Pons said.

As families walked past the area where Goll was working that afternoon, they stopped to peek at his work-in-progress.

Children played in the surrounding sand, happy to be in a large sandbox.

Nathan said he likes the sand sculptures a lot, but he especially enjoyed the medieval booth in Central Parklet.

"Too bad nobody thought of making a mace," he said as he swung his plastic medieval battle souvenir.