A major alteration in 1946 added a one-story dining room and kitchen to the south side of the original building.

With a re-run of the fifth season's twenty-first episode, the show underwent a major alteration of its format.

The addition of booths next to the dance floor was the last major alteration before the fire.

In 1986, the transit authority would undergo its first major alteration in the system.

A major alteration came in 1892, when a polygonal vestry was built beyond the chancel.