400 YEARS YOUNG

Portsmouth NH 400 was founded to spark the city's collective imagination, leverage the talent of its multifaceted population and many organizations, and lead up to and beyond Portsmouth's 400th anniversary in 2023. Portsmouth NH 400's role involves convening, promoting, and coordinating celebration plans.

HAPPY LAST NIGHT TO 2023!

It’s been an honor and a privilege for all of our #PNH400 teams to have had the opportunity to serve, eat, talk, dance, march, befriend, run, play, sing, read, partner, learn, smile, and celebrate with this unparalleled community for the last year. Last stop? Let’s go out with a BANG: Pro Portsmouth #FIREWORKS tonight at the South Mill Pond at 7:30PM on 12/31/2023. Bundle up!

And welcome to the first night of Portsmouth’s next 400 years. We expect great things.

THE STORE IS KINDA OPEN

PRINT ON-DEMAND ONLY,

NO IN-STORE PICK UP

The gift shop at Portsmouth Historical Society may be closed for the season, but our online store has some select #PNH400 items for you. Check out our PNH400 Mercantile page to see what’s available.

PRESERVE AND ENCOURAGE OUR CULTURE OF COMMUNITY PRIDE

Donations received will support select signature events and legacy projects and will promote the full range of celebrations, programs and other events under the Portsmouth NH 400 banner.

All donations to the Fund are tax deductible to the extent the law allows.

PARTNERS & SPONSORS

CELEBRATE PORTSMOUTH’S RICH HISTORY AND VIBRANT FUTURE

COMMUNITY COLLABORATORS

FOLLOW US ON INSTAGRAM