Sacred Heart Basilica, Barcelona

I saw it from far away on my first day in Barcelona, for it occupies the highest peak of the city, Mount Tibidabo, and is quite visible in the distance when standing at the shore. It is run by the Salesians and has perpetual adoration.

It's just a one hour trip with public transportation.

This grand shrine reminds me of another worthy though much less grand Salesian monastery in another iconic city, the monastery overlooking the city of Nazareth in the Holy Land, the Church of Jesus the Adolescent.