The document analyzes tourist behavior in Barcelona through a study of 42,600 photos uploaded to Flickr from 2010 to 2011, focusing on popular attractions, visitor patterns by nationality, and the impact of weather on tourism. Key findings include that Plaça Catalunya is the most photographed location, with significant concentration of tourists in the Ciutat Vella district and varying preferences based on nationality. The study highlights the effect of weather on tourist movement, revealing that rainy days lead to visits to indoor attractions while hazy days result in increased photos taken at waterfront areas.