Caboose Hobbies, the world's largest model railroad store will close it doors on September 25th. The Denver Post is reporting that the widely known model railroad mecca has lost its lease and the owner has no interest in finding a new location. The Post article conflates the loss of lease with unrelated issues of an aging population participating in the hobby.
Nonetheless, the well-known hobby shop will soon be gone. It isn't clear whether the extensive online business will continue. You can read more of the Denver Post article for more information.