She was accompanied by Marianne Archibald, Wanganui digital community facilitator, and Sally Patrick, council community and culture officer, who also paid their own way.
"New York wasn't on the top of my places to visit, but I loved the hustle, the loudness ... and most of all the service," the mayor said.
"We could learn a few things from the young people I came into contact with, especially their courteousness. Would I go back? Yes, if there was a specific reason."
An intelligent community or Smart City is one that endeavours to create prosperity, stability and cultural meaning in a world where jobs, investment and knowledge increasingly depend on advances in communications.
"The challenge for us is to make it inclusive," said Mrs Main.
"Even if someone doesn't want, or feel the need, to be connected, it's important that they know they can access the council website if they want to."
Wanganui is the only New Zealand participant in the Forum and will host a presentation from ICF co-founder Robert Bell tomorrow.
Mr Bell's visit has been made possible by sponsorship from Ultrafast Fibre, Chorus, Inspire, 2020 Communications Trust, Alcatel and NGconnect.
Ms Archibald said it would be a good opportunity for people to learn about ICF and what Smart Cities are all about.
"A lot of people from outside the region will be attending. It has generated a lot of interest and will be very worthwhile for local people to attend."
Mr Bell will speak at the Concert Chamber, War Memorial Centre at 5.30pm until 7.30pm tomorrow, and there will be an opportunity for questions and networking.
There are limited places so anyone wishing to attend should contact suzanne.carrick@wanganui.govt.nz or phone 06 3493119.