There was also entertainment for children, with Justin Gush providing some poi toa for them to try.
The tribe's taiao (environment) team showed how harakeke (flax) is potted up before planting out. Its Te Kotuku Hauora health workers and others offered bowel screening, immunisations and cervical smear tests.
Summer intern Tiarne Gush launched her research project, a booklet about the three Ngā Wairiki Ngāti Apa people who signed the Treaty of Waitangi at Tawhirihoe Pā near Tangimoana on May 21, 1840.
A stone was erected nearby in remembrance 175 years later on May 21, 2015.
Gush was helped in her research by Grant Huwyler and other tribal historians, Wilson said, and the booklet will be used in schools.
"It's not an overly complex book, but it's really awesome in terms of getting to the bits that we need to keep sharing."
The iwi plans to hold more open days at Te Poho.
"It's a start for us. What was awesome was the opportunity to bring people in who don't usually walk through those gates," Wilson said.
