I first visited this magnificent church in 1998; when I visited again last year the amount of progress was amazing. This can be credited to computer modeling and modern construction techniques.
I tell you, this place wows you. If you have the means, it is a bucket list must-see.
The photo above is a model of the project, with the Mary tower above the sanctuary and the Jesus tower smack dab in the middle of the transept, at an awesome height of 566 ft-- almost but not quite as high as the Gateway Arch. It would be the tallest church steeple in Europe.
The photo below is a pic of the modernista columns and roof , taken in 2014. It doesn't do it justice, believe me.