Popular Perth amusement park Great Escape has been closed indefinitely and its future is uncertain, with the lease running out for the current operators and the venue's phone apparently disconnected.

Property management agency the Wyllie Group has a long-term lease with the Department of Transport covering parts of the commercial retail and recreation space of Hillarys Boat Harbour - including the Great Escape.

The Great Escape will reopen partially this summer. Credit:Great Escape Facebook

Wyllie Group chief operation officer Todd Morcombe confirmed the park's closure was due to a tenancy issue.

"The current operator no longer has the lease, so we are desperately looking to fill that tenancy," he said.