Cathedral of the Sea is a historical drama television series set in 14th-century Barcelona. The show follows the story of Arnau Estanyol, a serf who seeks to escape his life of poverty and servitude by building the grand Santa Maria del Mar cathedral. Arnau's ambition and determination put him at odds with the noble class and the Inquisition, while his personal life becomes complicated as he navigates relationships with multiple women. The series features a talented cast, including Aitor Luna as Arnau Estanyol, and boasts a rich historical backdrop of medieval Barcelona.

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Some TV shows that have similar genres and were produced around the same time as Cathedral of the Sea include Lessons in Chemistry, Midsummer Night, Maxton Hall - The World Between Us, Behind Her Eyes, The Good Doctor, Heartbreak High.