Before construction could begin on the new wing of the Sarjeant Gallery, Whanganui kaumatua John Maihi oversaw the blessing and burial of two mauri stones.
The ceremony on May 6 was attended by four local iwi members.
Sarjeant Gallery redevelopment project director Gaye Batty said the dawn burial involved two taonga.
"One [mauri stone] was collected from the Whanganui River to signify a reconnection with a mauri stone that has been buried under the Sarjeant Gallery since 1919 when it was originally constructed," Batty said.
Another stone, a piece of shell rock chipped from the bluff overlooking the Whanganui River and gifted by Ngati Tuera and Ngati Hinearo, was buried in commemoration of lives lost in the Covid-19 pandemic.