The Covered Bridges and Museums from the Contoocook area.

Hopkinton/Contoocook is home to the oldest railroad covered bridge in the United States. The covered bridge over the Contoocook River in downtown Contoocook was built in 1889.

Pictured below:
At the Boston Museum of Science: the giant Van de Graaff generator and a plasma sphere in the Theater of Electricity, also some giant cockroaches from the butterfly exhibit.
Railroad Bridge in Contoocook (1889); Bement Bridge in Bradford, NH (1854); Keniston Bridge in Andover, NH (1882).