For color choices, see Alternate Images 34 in. tall, 24 in. square base.  Upper sleep tray is 18 in. exterior (15 in. interior); Lower sleep tray is 14 in. exterior (12 in. interior) We've got all four corners covered with this piece!  One post is covered with sisal rope and three with carpet.  With 2 sleep trays on different levels for your cat to share - or not!   Read less