Interesting place where you will get to see some rare gems and stones from all over the world. You also get a great history lesson of the area and get to take home some fluorescent rocks home. There is a cool tour underground, so bring a sweat shirt or sweater as it is cold and wear shoes that are comfortable and you won't mind getting a bit wet. The tour guide was very informative and don't forget to stop at the shop before you leave and pick up some of the special "Franklin -ite" rocks.....as we were told it's very hard to find rocks like these anywhere else in the world. If you want them to fluoresce however, you will need a black light to see it, but if you don't have a black light they are still cool to collect.