Took the hourly free tour and it was amazing! The ...

Took the hourly free tour and it was amazing! The tour guide was enthusiastic and really knew his history. I would recommend doing the tours, I wish we had signed up for the 'hard hat" tour but we didn't know before we arrived. So definitely check out the various tours. The gift shop is decent, it has a lot of cool little nick knacks...I would recommend making sure you have space to bring stuff home.