The Sunsphere

The Sunsphere is the fourth and cheapest site available in The Simpsons: Tapped Out, following the Escalator To Nowhere, Popsicle Stick Skyscraper and the 50ft Magnifying Glass. It is the only site to be priced at under 1 million cash, and was released in August 2013 along with the Level 33 update. The Sunshpere unlocks a quest chain involving Bart, Nelson, MIlhouse and Martin.