One of the interesting things I learned at the municipal engineering museum was that engineers in Poland had to develop ways to incorporate new technology in cities that had existed since medieval times. Our guide discussed how, rather than destroying an arch that was too low to accommodate trams, engineers lowered the pavement. I noticed that the challenges associated with industrialization are visible in Krakow, such as the small streets that require one to park on the sidewalk, dense housing with highly limited floorspace (as exemplified by our hostel), and the modernization of the insides of buildings that were clearly built in a different era, all while still preserving the status of historically significant sites. It seems that Europeans had to put extra effort into accommodating industrialization, and this city is a great example of the ingenuity required to face such problems.