We are planning a family vacation to Maryland this summer so I would like to get some opinions from people who live there or have vacationed there themselves. What are some must-see places? We are planning to spend a day in Washington, DC and will probably be staying somewhere around the Baltimore area. We would like to take a day to do some hiking, maybe some fishing for my sons....best park for that? We would like to do a little of everything...shopping, outdoor stuff, historical things, etc. so I'd love to hear every suggestion. We have a travel guide from Maryland which has given us some ideas, but it's really hard to tell from brochures what might be great sites to see. We will be there for about 5 days. What do you feel are the highlights of Maryland??