Not necessarily. A 11,000 sq. ft. replica of Disneyland's Haunted Mansion have been built (and featured in several TV shows and e-magazines) and it was built with Disney's permission.
(if it was built without Disney's permission, the corporation can sue the owner and win up to $100,000 as per US copyright law)
(if it was built without Disney's permission, the corporation can sue the owner and win up to $100,000 as per US copyright law)

