Glenn Dale is the top 6 best cities for you to work and visit in Prince George County, Maryland. So far, there are around 13,361 residents in the area, and all of them have varying cultures, which is exciting and enjoyable.   In terms of the best places you can visit in Glenn Dale, it offers both natural parks and commercial establishments for leisure and entertainment. Having said that, some of these sites include Greenbelt Park, Six Flags America, Patuxent Research Refuge, and Marietta House Museum.