How tall should a cat tree be for a large cat or Maine Coon?

Mainstream reviewers and large-breed communities generally point toward 65–72 inch towers with enlarged platforms and condos rated for 20 lbs or more. Several Maine Coon and 'dechonker' community posts specifically flag oversized perches and reinforced bases as what separates a large-cat tree from a standard one, since standard perches are often too small for a big cat to fully stretch out.