The Grandstreet Theatre is home to the longest-running community theatre in Montana. Originally, in 1901, it was built as a Unitarian Church already having the sloped floor and proscenium stage that can still be seen today. However, there are indications from certain church documents that it really was meant to be a multi-use facility. The structure’s architect wanted to design a more unique lay-out wherein the church has its own stage, dressing rooms, and auditorium. The Unitarians, on the other hand, wanted a facility just enough for recitals, pageants, and dramatic presentations. In 1933, it became a library replacing the city’s original that had been damaged by earthquakes.

In 1976, the library underwent a major renovation and restoration to become the Grandstreet Theatre. It received a historic preservation award for the tremendous effort that had been given in restoring the structure.

Now, the theatre has flourished with the help of skilled directors and active citizens who also started the Grandstreet Theatre School.