Exploration Place will remain closed until the spring of next year.
The museum's board of directors decided during their most-recent meeting to delay reopening both in the name of preventing spread of COVID-19 and to give time for a major renovation.
"Staff are working in the building, renovating our galleries, access points and interpretation," the museum said in a statement issued this week.
"We are planning to offer a large, indoor botanical Palaeo-Garden and a major expansion to our Animal Ambassador Program and Biome that will explore climate, evolution and what tools we have in our history that can be used to inform our future.
"We will reconfigure the Ted Williams History Hall with more room for in-house exhibits drawing on our collection and archives of over 1,000,000 entries, and we will be creating new space to showcase indigenous material culture and traditional ways of knowing."
Its online services will remain in operation.
"We will continue to offer you new online experiences; launching our online Nature Exchange and Speaker Series this summer; offering free in-class school programs starting this fall all over Northern B.C. and by upgrading our obsolete collections database to a brand new system this winter.
"Our gift shop is available for curbside pick-up and we are still selling those great, non-medical masks to help keep us all safe."
The museum has been closed since March 13.