Six Flags America in Upper Marlboro, Maryland near the capital city of Washington D.C. is a medium-sized theme park by the Six Flags group. The park opened in 1982 is the home of a large selection of flat rides and some very fine roller coasters.
Legoland California in Carlsbad, California is one of the largest Legoland theme parks of the Merlin Entertainments Group. Like every Legoland, the park is characterised by its numerous replicas of national and international buildings in the Miniland section of the park. In addition, Legoland California offers an a wide range of roller coasters and other rides for the whole family, all of which are also remind of the well known clip-on bricks. In general, the park is well thought-out and can show some atmospheric themed areas that merge very well.
Energylandia located in the middle of nowhere between the two cities Katowice and Krakow is the largest theme park in Poland. The park opened in 2014 is home to the largest roller coaster collection in all of Europe.