Every year Doors Open Lowell provides an inside look to nearly 30 buildings. Look for old favorites this year as well as new additions to the roster of buildings.

Please note that Doors Open Lowell 2026 will again be a one day event on Saturday, May 9.

No tickets or pre-registration is required. Admission is free.

The Lowell National Historical Park’s Visitor Center at 246 Market Street will serve as the hub for Doors Open Lowell information this year on May 9. A shuttle bus will also run on a rolling basis between the Visitor Center and selected sites.

Look for the blue Doors Open Lowell banners identifying participating sites.

The official Doors Open Lowell program guide will be online and also available at the Lowell National Historical Park’s Visitor Center, Mogan Cultural Center, and Boott Cotton Mills Museum as well as the Pollard Memorial Library in early May.

The 2026 building roster is a work in progress and sites will be added below as they are confirmed.

CLICK HERE TO SEE AND DOWNLOAD THIS YEAR’S PROGRAM GUIDE AND MAP (AVAILABLE LATE APRIL, 2025)

Click on each building’s name to learn more about its history.