The 1980-81 alterations included an extension to the second floor and the addition of catering facilities in the basement.

The 1935 version's alterations included a fully enclosed transparent canopy.

These alterations included dropping the introductory march (K. 385a) and one of the minuets.

Other alterations made during the 19th century include the replacement of the south porch with buttresses.

Physical alterations include changes in water temperature, water flow and light availability.

Later alterations include the addition of the north and south transepts, built 1753-1755.

Over the next century alterations to the shops included cantilevered extensions on the bridge's north and south faces.

Although it maintains the style of the original, alterations include:

The alterations to remove the church's original Armenian characteristics included:

The alterations to the piano included making the touch lighter and reducing the key-dip.