Junkers G.38

[Greybeard]

The Junkers G.38 - Once the largest airplane in the world with passengers on two flight decks and in the wings, and all engines being servicable in flight! Unusually, of the G.38’s four engines, two of them were different types. Both were Junkers diesel engines. Whilst similar on the surface, they were completely separate designs.
https://planehistoria.com/junkers-g-38/

[muskrat]

G'day GB.
Arguably the most unique features of the G.38 was its passenger compartments, which were located in the wings. The leading edge of the wings had windscreens over them so passengers could see out of the front of the aircraft.  No thanks.
Cheers