Fort Decker: Come see our new Gillinder Glass display. Regular tour schedule: Opens from 1 - 4PM on the last Sat. of each month through Oct. Any changes or updates will be posted to Facebook. In October, we hope to again welcome the Navasing Long Rifles, a colonial reenacting group. Dressed in period attire, these historians portray and share their knowledge of our colonial times as "living history" - contemporary to the period that this historic stone building served as an 18th century fort.