The SkyDome is a central figure on the city's skyline and its most identifiable object when photographed from space. It officially opened back on June 3 1989.

Here's a photographic look back at its construction and opening.

The Railway Lands pre-SkyDome

Under construction from the CN Tower. Photo by~EvidencE~

Photo bycliffordstead

SkyDome steel work

Image viathe Stadium Page

Ad for SkyDome in 1988

Almost Done. Photo via the Toronto Archives

Done! SkyDome postcard from 1990

Photo via theImage Science & Analysis Laboratory, NASA Johnson Space Center

Check out this timelapse of the construction of the SkyDome, which also features some awesome sequences of the first tests on the moving roof.