If your trip to Baltimore is all sorted out but your itinerary is a little on the empty side, we can give you a few hints and tips.Think of Baltimore and then say the first thing that comes to mind. You probably said "National Aquarium in Baltimore," right? Being such a famous attraction, you simply can't miss it. Toss your luggage into the trunk and tick it off your bucket list.You'll have to wake up early if you want to see all the interesting attractions this place has to offer. USS Constellation and American Visionary Art Museum are non-negotiable. Oriole Park at Camden Yards and Walters Art Museum shouldn't be forgotten either.Stop by Horseshoe Casino Baltimore. It's one attraction you'll find on travelers' to-do lists. If you still have some space on that travel itinerary, Baltimore Inner Harbor Marina and Power Plant Live will keep you amused too.