The entry fee will be $35 and will apply from 17 September to international visitors aged 16 years and older.
With nearly 600,000 international visitors in the 2023/2024 financial year, Te Papa is expected to earn an additional $5-$10 million per year from the move.
Johnston said visitors would self-identify their nationality.
"You'll walk into Te Papa and we'll say, 'Kia ora, how are you? Where have you come from today?' And if you say, 'Oh, I've come from Johnsonville', then we'll say, 'Great, head up the stairs, head into the museum, have a wonderful visit'.
"And if you say, 'Oh, I'm from France' or 'I'm from Germany', we'll say, 'Awesome, head up the stairs, you'll see the ticket desk right there, that's where you can buy your ticket'."
Interestingly, in the last few years New Zealand has had it's first commercial coffee grower set up right near the top.
It's definitely specialty and is very expensive ($55NZD for 180g - which is $305NZD per KG or $188USD per KG or $85USD per lb).
But the fact they can grow it here at all is a sign of things changing.