The show's sinister mood is heightened by a structural addition: a wall with a two-way mirror and a door that leads nowhere.

The only structural addition in the building is the mezzanine floor built during 1987-1988.

The city has relatively strict zoning laws that restrict major changes to houses and require city approval for any planned structural additions.

Later structural additions to the house were completed in the 1850s and 1880s.

The station was built in 1899 and saw structural additions throughout the 20th century.

Several rounds of restoration in the Victorian era included some structural additions.

Afterwards little structural addition was made.

A number of recent structural additions were also removed.

Over the past twenty years structural additions have been made to the school, including a music school, technology block and library.

The most recent structural addition to the ground is the Ken Arthurson stand.