Discover the communist remnants of Sofia city center on a walking tour with an English-speaking guide. Benefit from their expertise about the communist era and its architecture. See the imposing Monument to the Soviet Army at Borissova Garden, and then ride a trolley bus with the locals to experience a relic from olden times. Arrive at the impressive National Palace of Culture, the largest congress hall in the Balkans. Discover a piece of the Berlin Wall, which fell just one day before the radical changes that occurred in Bulgaria in 1989. Walk down Vitosha boulevard to reach the former headquarters of the Communist Party. See the upmarket Central Department Store (TZUM), where the elite would shop. Continue to the site of the former Georgi Dimitrov Mausoleum on Prince Alexander of Battenberg Square. End at the antiques market outside Alexander Nevsky Cathedral and pick up some communist relics.