The LEGO Architecture Skylines series highlights a number of famous structures within a city skyline and explores several landmarks from a single city, rather than focusing on just one building such as the Landmark Series. The series was introduced in 2016 and now contains more than a dozen sets representing cities such as New York City, Venice, Sydney, Chicago, London, Paris and many more.
Skylines consists of 14 sets that ran from 2016 to 2022. As of today,
21038 Las Vegas is the most valuable Skylines set with an estimated new/factory sealed value of $2,777.
Summary
Architecture Skylines Chicago set 21033 was released on January 2, 2017, retailing for $40, it has since been retired. New, unopened sets are valued at $231, used ones can be found for $146.
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