Back in the 15th and 16th centuries, Krakow was one of the wealthiest cities in Europe, and most of the city’s opulent design remains untarnished by history. Discover its unique charm for yourself along a 3-hour group walking tour.  Visit the largest market square in medieval Europe, the oldest functional university building in the world, an ancient souvenir shop, a well-preserved medieval altar and much more.  With an expert guide by your side, traverse one of the most Instagrammable routes in all of Poland. See St. Mary's Basilica, the city's quaint Old Town, and the majestic Wawel Royal Castle. Learn about the fascinating history of these UNESCO World Heritage Sites as you go.