The theater was reopened in 2004 after a major restoration, and it currently serves as the home of the Boston Ballet and also hosts touring Broadway shows.

The Boston Opera House was originally designed as the B.F. Keith Memorial Theatre, a lavish movie theater in the Keith-Albee chain.

Sack later added a second smaller cinema in the theater's stage space, separated from the original auditorium by a masonry wall built across the proscenium.

The theater was acquired and renovated by the opera company with the help of Boston arts patron Susan Timken.

After a series of failed or delayed development proposals, Clear Channel's live/concert division, today's Live Nation, agreed to renovate the theater.

[9] Live Nation has kept the historic theater busy and active with long runs of touring Broadway musicals and pop concerts.