06/14/2026
🌊 For decades, Boston commuters drove over them without knowing. In 1913, workers excavating for a subway line made an astonishing discovery: 28 to 40 feet below the streets, buried in layers of clay, were the remains of 65,000 ancient fishweirs. The structures were built by Native Americans between 3,700 and 5,300 years ago. They had been fishing on the Shawmut Peninsula long before Europeans arrived.
🔨 A fishweir is a fence-like structure made of interlaced brush wood, designed to guide fish into narrow channels where they could be easily speared or netted. The Boston weirs were built from invasive buckthorn, carefully woven to withstand river currents. Some were nearly a thousand feet long. The engineering required a deep understanding of hydrology, fish migration patterns, and seasonal flooding.
🏙️ Today, the Ancient Fishweir Project returns to Boston Common every May. The installation is built in collaboration with Boston Public School students and members of the Massachusett Tribe. The weir now stands near the Charles Street entrance, close to where the original shoreline once was. Visitors can walk past it and imagine the river that once flowed there.
📜 The fishweir installation will remain through June. It is a reminder that Boston's history did not begin with the Pilgrims. For thousands of years before, Native people lived, worked, and fished on this land. Their traps are still there, buried beneath the city. The subway runs above them. The fish still swim where the river used to be.
Disclaimer: This content is based on archaeological records and news reports. Images are for illustrative purposes only.