The "Golden Lion" is one of the most important sites in the history of German social democracy. On August 7, 1869, the founding congress of the Social Democratic Workers' Party (SDAP) was opened under the leadership of Wilhelm Liebknecht and August Bebel.
Today, two exhibitions can be viewed in the house: "Social democracy from Eisenach to the present day" and "Eisenach at the time of the 1869 Congress". Lectures, seminars and book readings take place all the time.