On our way back from visiting Iowa and the South Dakota Badlands, we made a pit stop at the Earth Resources Observation and Science (EROS) Center. We’re sure glad we did! As you probably know, we love touring museums and learning as much as we can about the places we visit on our journey – and it’s even better when it’s for free! The Center is completely free to tour. Just take note that when you enter the premises you will be asked questions about your visit. It’s no big deal, though.