According to Thomas E. Rinaldi on the site: Hudson Valley Ruins:

NOT MANY PEOPLE alive today can remember the time when the Hudson Valley was arguably the most important center of brick making in the world. In 1910, more than 130 brickyards operated on the river between New York and Albany. The number declined steadily thereafter, until the last Hudson River brickyard (the Powell and Minnock plant near Albany) shut down in 2002. Remarkably there is very little left of the yards themselves, and the ruins of the Dennings Point Brick Works at Beacon are among just a small handful of Hudson River brickyard structures that survive in the 21st century.

…

DENNINGS POINT hooks out into the river just below the city of Beacon. Its unusually complex history has been chronicled in a great book by Jim Heron entitled “Dennings Point: A Hudson River History.” Archeological evidence suggests that the point was inhabited as early as 4000 B.C. More recently, Washington traversed it during the American Revolultion. Alexander Hamilton penned the first of the Federalist Papers while visiting an estate that existed here through much of the 19th century.

More detailed information on the history of Dennings Point can be found on a site focusing primarily on brick collecting in the Hudson Valley and New England: brickcollecting.com.

The only manufacturing building remaining from the Brickyard.

Inside a structure added by Durisol (who manufactured construction panels) and was later used by Noesting who made pins.

Graffiti

Open Space with Tree

In 2003 Dennings Point was chosen for the site of the $27 million dollar Beacon Institute for Rivers and Estuaries. One of the old buildings has already been converted and is now the Center for Environmental Innovation & Education. Reconstruction of the old Noesting/Durisol factory) was supposed to have begun soon afterwards, but so far little seems to have happened.

A different building. I don’t know what it is/was, but it’s right alongside the Hudson.