We took our first road trip of the (almost) summer to the Sterling Hill Mining Museum in Ogdensburg, NJ
My son is very interested in Minecraft right now and my daughter collects rocks from everywhere that we go. So, this trip seemed like an ideal fit. We all had a great time and were exhausted by the end of the day.
The tour starts in "museum"-like exhibit hall of the facility. There was a large collection of rocks, crystals, and memorabilia from the Mine's history. They had a "scavenger hunt" to encourage you to explore the collection and the younger kids all enjoyed that.