This mundane looking manhole cover on ul. Miodowa holds one of the greatest stories of the Warsaw Uprising. This was used as an escape hatch by the Polish Home Army (Armia Krajowa) to access the city centre underground sewer system. In 1944, as German troops and tanks systematically drove the defending, and by almost defeated, partisans into  the city centre, the decision was made to abandon the devastated Stare Miasto. On September 2, around 1,500 of the surviving AK troops, along with over 500 other wounded, headed down into the city sewers through a single manhole to escape the ruins of the Old Town. Thousands of cars now drive over it everyday, many of them oblivious to the historical significance of the road beneath them.