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City Mayor for Warsaw, serving from 2002 to 2005, Lech Kaczyński spearheaded various transformative initiatives that shaped the city's landscape and infrastructure. Kaczyński's tenure witnessed significant investments in transportation, including the construction of new metro lines and renovations of roadways, aimed at easing urban traffic congestion. He also prioritized the restoration of numerous historical sites and landmarks, contributing to the preservation of Warsaw's cultural heritage.