This DLC brings 15 new buildings from creator Mauro Vos. It features several unique buildings -- including a farm, nanotechnology center, research center, robotics institute, a space shuttle launch site, and television station. There are also city service buildings, including police headquarters, medical laboratory, large crematorium, and university.
The service buildings provide some value, but the rest aren't functional. Like Art Deco, the content in this DLC was not created by Colossol Order -- so any proceeds go to the creator, Mauro Vos. In addition, as mentioned, similar unique buildings can still be downloaded for free elsewhere on the web.
You want to support Mauro Vos and show your gratitude for all he's developed in Cities: Skylines.