This is one of the frontons, the open-walled area in which the jai alai sport is played, that were built in Madrid at the end of the 19th century, when bets around this sport became very popular. It’s in fact the only one still not destroyed in Madrid. Maybe because its architect was Joaquín de Rucoba (Laredo, 1844), who built some of the most important monuments of Bilbao at that time.
What’s interesting about this fronton is its neomudejar style and the use of iron columns, which were pretty common in Madrid’s luxurious buildings in 1894, when it was built. Unfortunately, it was abandoned for many years and some construction companies even tried to demolish it. Three years and 5 million euros later, it looks as it used to.