Madrid's cathedral, The Cathedral de la Almudena, took more than 100 years to complete. Construction was started in 1883 It was finally consecrated by pope John-Paul II in 1993.
This Cathedral is modern so to speak, only finished and officially opened within the last 20 years.
Well worth a visit, view the art, the building, and see the Icon housed here.
Entrance is free so go and take a look inside. It is one of the most unique churches I have ever been to. It was beautiful.
La Almudena Cathedral is a result of King Phillip II making Madrid the capital of Spain. Thus the new capital needed a cathedral. It took over 100 years for its completion
I didn't get to go inside, because we travelled every weekend, I couldn't get the hang of Siesta until it was time to leave, and the one day I made it, they were closed for an official ceramony.