Modernist architect Antoni Gaudí was commissioned to remodel this summer house, gardens, and adjoining farms located on the outskirts of Barcelona that his patron, Eusebio Güell, had inherited from his father. The Catalan genius designed the gatehouse, the stables, and the brick walls in the Mudejar style, with his unmistakable seal. But the most remarkable part of this complex is the extraordinary iron gate, where a horrible dragon welcomes visitors. The dragon is actually a symbolic tribute that Güell wanted to dedicate to his father-in-law, the Marquis of Comillas. The…