Dan Hamill of TLC's popular new reality show, Our Little Family, makes his young son's dream come true with an amazing play fort on tonight’s episode, and ETonline has a sneak peek.

‘Our Little Family’ centers around Dan, wife Michelle, and their beautiful brood which includes son Jack, 6, and twin girls Cece and Cate, 3, all of whom are little people. The family rises to the challenges they face due to their dwarfism, with Dan working in the construction field and the family living in a rental that is not customized for their size.

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Dan put those construction skills to work in building Jack’s castle fort. He says in our exclusive clip, “Building this play set really must be one of the most meaningful things I’ve ever done, because it’s for my son.” (Ed. note: Awwww!)

It was important to Dan that all the neighborhood kids could enjoy the fort, but explains how he made sure it worked for Jack, “We put more holds on the rock wall, so he could always have a grip. I made sure the rungs on the ladder were close enough that he could use them.”

Watch the video to see Jack’s adorable reaction to his new play space, and tune in to tonight’s episode of Our Little Family at 10 p.m. on TLC.

Follow Lisa Lozano on Twitter @LisaLozanoLA.