Terrassa is a Spanish city located 20 kilometers from Barcelona in Catalonia. It has a population of over 212,000 people, making it the fourth largest city in Catalonia. Terrassa experienced strong industrial growth in the 19th century, with many textile factories, and this is reflected in its modernist architecture from that era. Today Terrassa has a wide range of cultural and sporting activities, and is known for its jazz festival, castellers (human castle groups), and field hockey clubs.