re: #191 Shiplord Kirel
Tupolev seriously considered an even larger development, the ANT-26 bomber and -28 airliner. These would have had 12 engines, a wingspan of 311 feet, and a length of 128 feet. A prototype was started but never completed or flown.
I’ve been inside the An-225. Toured it at the Paine Field Air Show in Everett Wa back around 1990/91. That thing is ridiculously huge.