The Models Collection of the Museum is one of the largest in Finland. It includes about 500 models, most of which have been received together with other materials related to architectural competitions. The Museum has also been donated individual models, and they have been received together with donations of drawings. Architects have also deposited their models in the Archive. 

The oldest of the Museum's models is from the 1890s. It presents Mikaelinkirkko (St. Michael's Church) in Turku by Lars Sonck.

A number of models from different periods and made for different purposes are continuously on display in the Archive, illustrating the achievements of Finnish architecture. The 19th century is represented by the above mentioned Mikaelinkirkko, while the models of the Lasipalatsi building by Niilo Kokko, Viljo Revell and Heimo Riihimäki (Helsinki) and the Villa Mairea by Alvar Aalto (Noormarkku) depict the modern architecture of the 1930s. The majority of the models on display represent the late 20th or early 21st century.