The Crystal House apartment building, which opened in 1964, was the first Crystal City high-rise built. The ornate chandelier in its lobby lent its name to the up-and-coming development.
Photo from the Katsias Company

The Crystal Plaza One office tower was among eight high-rises built as part of the Crystal Plaza residential and office superblock. These structures were completed between 1965 and 1968. Their basements were linked by the Crystal Plaza Shops subterranean shopping mall.  
Photo from www.loopnet.com

Crystal Mall One was a component of the adjacent Crystal Mall superblock. Completed in 1969, the complex featured four office towers, the posh Crystal City Marriott hotel and the Crystal Mall Shops underground shopping mall.
Photo from www.loopnet.com

A circa-1969 aerial shows the original components of Crystal City, along with two adjacent facilities. Going from left to right are A- Crystal House apartments, B- Crystal Mall superblock, C- Crystal Plaza superblock, D- Richmond Fredericksburg & Potomac Railroad (relocated in early 1980s) and E- Washington National Airport (renamed Ronald Reagan Washington National Airport in 1998).
Photo from https://www.flickr.com / "Crystal City" / Andrew D'huyvetter