Ah, summer in Europe. Slow mornings spent reading books and trying all the local pastries you can get your hands on; afternoons strolling along the river or exploring quiet neighborhoods; evenings sipping rosé in sun-dappled squares. The only thing that can disrupt the pure bliss of summer in Europe is the threat of heaving streets, packed bars, and overbooked restaurants—a reality that is, unfortunately, all too common in the continent’s most popular destinations.