Beautiful Interactive Map of Barcelona Digs Into Rich Architectural History | visual data |

Barcelona is one of Europe's most vibrant cities. Tourists flock here for the superb restaurants, lively nightlife, and a chance to check out the stunningly creative architecture of Antoni Gaudí. But the city's historical and cultural roots run deep, and a new interactive map aims to make it easier for visitors and locals alike to explore the city's landmarks.

Created by the design firm 300,000 Km/s, the map includes 3,000 notable places, from Roman walls to modern street art. It also includes data on building ages for more than 70,000 properties. All this information was already available, at least in theory, from Barcelona’s city council and the national database of cadastral data.