B-29 and XB-36 size comparison
The B-36 fuselage was as 163 feet long, the wing span 230 feet and the tip of the rudder was 46 feet 10 inches off the ground. The largest combat aircraft ever built, the B-36 was the first bomber capable of delivering thermonuclear weapons and with a range of over 6,000 miles and a maximum payload of at least 72,000 lbs, the B-36 was the first operational bomber with an intercontinental range. The first XB-36 flight occured on August 8, 1946 and the last flight (a B-36J) flew from Davis-Monthan AFB near Tucson, Arizona to Wright-Patterson AFB near Dayton, Ohio on April 30, 1959.
Of the 325 that were built, only four have survived intact.
At the Historic Aerials website, you can find images of the aircraft "boneyard" at Davis-Monthan AFB in 1958. By my count, there are 160 B-36 aircraft that are awaiting scrapping or are in the process of being cut up. There are 24 more south of this image link below, and two more on the north side of the base.