In 'Stranger Things', what is the name of the alternate dimension?

Who played Tyrion Lannister in 'Game of Thrones'? What is the name of the giant wall in the north in 'Game of Thrones'? Which 'Game of Thrones' prequel series focuses on House Targaryen? In 'Stranger Things', in which fictional Indiana town does the story take place? In 'Stranger Things', which character has telekinetic powers and loves Eggo waffles? Which streaming service produces 'Stranger Things'? Who played Eleven in 'Stranger Things'? In 'Stranger Things', which Dungeons & Dragons monster names the creature from Season 1?