Another important aspect of Geddes's plan was the use of the “superblock,” which was popular in the early to mid 20th century with its origins in the modernist movement. The main principles were to create extra-large blocks bounded by major rather than minor roads and have them threaded with narrow one-way streets designed in such a way to discourage traffic. The aim of these superblocks was to foster community and a sense of civic life within them. In order to achieve this, it was planned that at the center of each block was meant to be a central public space (a garden or public building). In reality, the commercial factors resulted in few of these central squares being captured for public use.