Greater Portland Landmarks

Greater Portland Landmarks (GPL) was founded in 1964 in response to the demolition of Portland’s historic Union Station, an irreplaceable loss that galvanized a group of citizens to take action. Since then, our organization has been dedicated to historic preservation, protecting and celebrating the region’s architectural and cultural heritage.

We believe that Portland’s buildings, neighborhoods, parks, and shared spaces tell the story of who we are—and who we can become. While our roots are in preserving significant historic structures, our work continues to evolve. We advocate not only for built environment, but also for the stories, places, and cultures that have shaped Portland in visible and invisible ways. We are committed to recognizing the full breadth of our city’s history, including those narratives that have long gone untold.

As proud stewards of the Portland Observatory, America’s last remaining maritime signal tower, we care for this National Historic Landmark and share its unique history with thousands of visitors each year.

Through education, thoughtful advocacy, and strategic partnerships, GPL promotes the adaptive reuse of historic buildings and the integration of smart, context-sensitive architecture. We support development that enhances affordability, livability, and a sense of belonging—projects that connect past and future while respecting the city’s unique character.

Sustainability is central to our work. Preserving and reimagining existing buildings is one of the most effective ways to reduce waste, save energy, and maintain the fabric of a city that is both resilient and inspiring.

At our core, GPL uses Portland’s heritage—its buildings, places, culture, and stories—as a catalyst for connection and a guide for shaping a city that serves everyone who lives, works, and visits here—now and for generations to come.