Robert Downey Jr., famous for 'Iron Man,' has built quite a big real estate portfolio over the years. From his Hollywood Hills estate to a USD 10 million windmill, he has several options. However, one of his most interesting buildings sits on his 7-acre land in Malibu. Originally, the beloved actor, who is slated to appear in 'Avengers: Doomsday' in December this year, purchased the land in 2009 and already had a home and even his own personal farm! However, in 2013, he wanted to invest in something long-lasting, something unique, and something that not many people had. Enter the Italian architect Nicolo Bini and his father, Dante, who brought a brand-new technique to Downey's home that took almost 9 years to build. Here's all you need to know about the 'Iron Man' actor's dome house.

In 2013, Robert Downey Jr. invested in a dome house known as the Binishell

In 2013, the 'Dr. Dolittle' actor wanted to expand on his beloved 7-acre land. The space where Downey and his wife, Susan, resided was their main home, along with their personal farm for rescue animals. However, the two wished for a completely separate space for entertaining purposes. While they were looking to build a separate space, they did not like anything that any of the architects presented to them. In 2021, the two even did a profile of the home with The Purist magazine to show fans a look into their unique and sustainable dome house.