indeed, his wish has become a reality. 175 years of size starts june 19th on d w. we all dream of holidays to relax or explore other parts of the world. yet tourism takes a toll on nature, cities and the climate. is it time to re think out travel plans before we need structural change and a totally different approach? before corona s struck cities like dubrovnik, venice and barcelona, we inundated with tourists leaving visitors, frustrated and local, stressed. but change is afoot, cerebral, down that we want quality tourism, which makes people fall in love with venice. they fall in love under the gaze of big brother. many towns and now using c, c t, v on a wide scale and we ourselves provide a vast amount of data. if we try to turn big data into small plato and simply put in networking data algorithms identify our needs and agencies provide the appropriate office. yes, we re all ready. airborne again, but can we still travel without feeling guilty? last rumble us bounced alon