Barcelona is a city renowned for its rich history, stunning architecture, and vibrant culture. While many visitors flock to the Gothic Quarter or marvel at Gaudí's masterpieces, there's another side to Barcelona that's equally fascinating: its industrial heritage. The city's former factories and warehouses have been revitalized, transformed into cultural hubs, creative spaces, and trendy venues. Here's a guide to exploring some of Barcelona's most interesting revamped industrial sites.