I visited Baltimore, Maryland with husband and baby a few weeks ago. I was pleasantly surprised at how much there is to see and do at their National Aquarium! The SIZE and beauty of the stingrays overwhelmed me, I almost teared up, wow. We stayed for 2 hrs and baby enjoyed it so much. He was so excited by all of the things he could touch and explore and he loved running around and playing peek-a-boo. Afterwards baby was so knocked out, his dad and I went with him to a noisy dinner at World Cafe (university place) and he slept right through it. All tuckered out!