the 1929 Caproni Ca.90, a six-engined inverted sesquiplane. In 1929 it was the largest aircraft in the world, it held that record until 1934

A six-engined inverted sesquiplane designed as a heavy bomber, read more about it and see a couple more photos at: http://dieselpunks.blogspot.com/2010/07/italian-giant.html

a better write up at http://progress-is-fine.blogspot.com/2013/08/caproni-90.html

The Caproni Ca.90 of 1929 was a follow-up to the unsuccessful nine winged Caproni 60 flying boat. https://justacarguy.blogspot.com/2019/06/wow-just-wow-caproni-ca60-experimental.html It was designed as a bomber with possible commercial use with an eye to transcontinental flights. Powered by six 1000 hp engines, it flew at 126 mph and set records carrying more than 20,000 lbs to 10,000 feet altitude. This was Caproni's last attempt at a large flying boat and only one was built.

This was featured in the Studio Ghibli film "The Wind Rises" (as always, skip the first minute)

thank you Kim for the reminder that Studio Ghibli did this