No. 2.

NUMERICAL ENIGMA.

I am a celebrated edifice composed of 21 letters.
My 16, 19, 12, 3 is a bird.
My 4, 18, 8 is color.
My 10, 14, 17, 19, 21, 6, 11, 20 is customary.
My 15, 2, 8, 7, 1 is a box.
My 13, 5, 9 is to set down.

Dame Durden.