As the coronavirus pandemic raged in March and April, the 500-year-old Amsterdam city-center became a ghost town: The scantily clad sex workers in brothel windows in small alleys like Stoofsteeg in the red-light district were gone, as were the hordes of tourists who come there to gawk at them; Coffee shops on historic plazas like Rembrandtplein and Leidseplein didn’t get the visitors who descend upon the city by the thousands for the cannabis they sell.