"T.I. fills an airfield hanger originally built in 1938 for the Nazi Luftwaffe. The Red Army overtook the site in 1945 and the Soviet Air Force stayed until 1992. A Malaysian company purchased the hanger at a steep discount in 2003, after some kind of German cargo-blimp enterprise went bankrupt. T.I. opened a year later. T.I.'s sandy beaches, complete with lopsided palm trees. At some point after I moved to Berlin in 2015, I learned of the gigantic and easily accessible bubble. T.I. is a labyrinth of superlatives—it’s one of the largest self-supporting halls on the planet and features the world’s largest indoor rainforest; T.I. is Europe’s largest tropical island resort and has the continent’s biggest wellness and spa complex; the park also holds the record for Germany’s highest water slide tower." - ByAlex Ronan