The Cathedral of Our Lady of the Holy Assumption, better known as Valladolid Cathedral, is a Catholic church in Valladolid, Spain. The main layout was designed by Juan de Herrera in a Renaissance-style.
The original design for this cathedral would have created a church which would have been the largest cathedral in Europe. Initially planned as the cathedral for the capital city of Spain, ultimately only 40-45% of the intended project was completed, due to lack of resources after the court moved towards Madrid, and the expenses caused by the difficult foundations of the building, which was located in an area with a large gap in the field.
Wikipedia https://en.wikipedia.org/wiki/Valladolid_Cathedral
Address 1A Calle de Arribas, Valladolid 47002, Spain
Coordinates 41°39'9.585" N -4°43'24.262" E