The Southland Museum and Art Gallery/Niho o Te Taniwha, constructed in 1942 and which had its pyramid roof added as part of renovation work in 1990, is being demolished.
The Invercargill City Council launched a "Farewell Pyramid" campaign to give residents and Southlanders the opportunity to say goodbye.
Due to earthquake risk, the museum was permanently closed on April 9, 2018. Demolition work began on Monday.
Locals were invited to share their memories of the building ahead of the demolition work, and those who didn’t get to see the building one last time before the work began have also been invited to share their memories of the building online.
Te Unua Museum of Southland director Eloise Wallace said the council wanted to hear from as many people as possible about their memories of the old museum and especially from residents who remembered the original museum before the pyramid went up.
"For more than three decades, the pyramid has been the backdrop to Invercargill life.
"I’m sure many Southlanders remember the first time they saw Roary the seal or took a school trip to the education room," Ms Wallace said.
Stories, photos, and memories can be shared on the council’s Facebook page.
There will also be postcards at the Invercargill Public Library, Te Hīnaki Civic Building and He Waka Tuia, where people can share handwritten memories.
"A selection of memories will go into a time capsule planned to coincide with the development of the new museum."