I am not religious but Santa Maria del Mar captured my heart on a weekend visit to Barcelona. Built in what was a working class neighbourhood and paid for by the 14th Century poor of the city this behemoth bursts up from the little streets and pathways that surround it in the Barri Gòtic.
Baistaxos carried boulders on their backs from Montjuïc Hill to build this church in only 55 years. These same workman are immortalised, along with saints, magi, Mary and Jesus on the walls and within enclaves on either side of the church.
Now Santa Maria del Mar is used no only for worship but also concerts, weddings and functions. But still the candles in red glass are lit by visitors for the love of God.