It marks the official center of Madrid. Seek out the “km 0” plaque on the bottom, which happens to be where all distances in Spain are calculated from. With out a subpoena, voluntary compliance within the part of your Online Services Supplier, or more information from the third party, https://servicesfororganisersifem47914.blogsvila.com/35964717/an-unbiased-view-of-quality-and-sustainability-ifema-madrid