Barcelona cityscape with overcast skies, dense buildings and streets, aerial view

barcelona cityscape aerial view overcast urban skyline architecture buildings streets dense populated spain european city travel destination catalan capital mediterranean tourism clouds panoramic rooftops life urban planning residential area block metropolis spanish culture city tour daytime viewpoint high angle skyline view city grid coastal city downtown sprawling urban sprawl catalonia planning panoramic shot cloudy weather travel exploration vista landmark view residential district urban density cultural destination