expansion
act or process of expansion of a structure
Marcus Aurelius Exedra
a 21st century hall in the Capitoline Museums of Rome
horizontal expansion
increase in the size of a building, increasing the size of its built-up footprint
vertical expansion
increase in the size of a building, within its existing built-up footprint
The Sackler Wing
Extension of the Metropolitan Museum of Art built in 1978
wake-equalising duct
ship hull appendage to manipulate wake inflow
eastward expansion of NATO
process in which NATO is expanded eastward in Europe
Sainsbury Wing
extension to the National Gallery, London