In the last 275 years Freemasons have significantly influenced the city of Potsdam and left their messages and marks behind. Find out more on our eye-opening tour. Go with us on a time trip through Potsdam and discover the masonic work and architectural creations. For centuries, Freemasons have shaped the course of history in the form of significant buildings such as the Sanssouci Palace and Park, the Brandenburg Gate, the 18th century citizens' palaces. They were built mainly by Freemasons and bore their allegory of humanistic thought. The tour takes you through the Sanssouci Park to Brandenburg Gate through the Old Town to the Obelisk in front of the city castle.