Grover (the Sesame Street muppet) in the Tall Hall. In increasing order of height, the room contains Grover himself, "it certainly is a tall hall", Big Bird, "hi!", a giraffe, a flag-pole (flying a US flag), a tree, a telephone pole and a bean-stalk. The room is narrow, square and extremely tall. We are looking at Grover from above and he's waving up at us. It's an illustration from a picture book "Grover and the Everything in the Whole Wide World Museum".
Sometimes you need somewhere to keep your giraffes and telephone poles.