In the middle of Clinton Hill, Brooklyn is the 25-acre Pratt Institute campus, a gorgeous collection of landmarked buildings amidst open green space. On the first floor of East Hall (originally the Mechanical Arts Building) is the Pratt Institute steam engine power plant. As Pratt describes, it is the “oldest continuously-operating, privately-owned, steam-powered electrical generating plant in the country,” and was named a National Historical Mechanical Landmark by the American Society of Mechanical Engineers (ASME) in 1977.