Dubai Expo 2020 was originally scheduled to begin later this month, meaning that many of the buildings on the 438-hectare (1,083 acres) site to the south of Dubai are largely complete.
The rescheduled event will now open a year from today on 1 October 2021.
Standing alongside the Al Wasl Plaza, the United Arab Emirates' national pavilion designed by Spanish architect Santiago Calatrava is also nearing completion.
The building, which was modeled on "a falcon in flight", will contain exhibition spaces, an auditorium, cafe areas, and VIP lounges.
Extending out from the central plaza are three leaf-shaped thematic districts that each culminate in a thematic pavilion.
The structure has been designed with a large overhanging roof that will provide shade for the surrounding gardens and exhibition spaces, as well as being a platform for solar panels. It will also harvest fresh water from the humid air.
Surrounding the pavilion are a series of solar trees, which will track the sun and provide additional electricity.
Following the expo, the Sustainability Pavilion will reopen as a science museum.
Source: Tom Ravenscroft