Sagrada Familia - maybe finished in 2024. It will be the biggest church in the world by then
Sagrada Familia (Barcelona Spain Travel Rainbow Trippy Spiritual Mandala Stained Glass Antonio Guadi Architecture Watercolor Painting)
Inside Gaudi's 'La Sagrada Familia' in Barcelona. Thought Pugin's gem of a church in Cheadle would be top of my church list, but having just been taken to Barcelona for my birthday celebration, this has to top the list by far!