The stone forest of the Sagrada Família

Carlos del Amor climbs from the crypt to the naves of the Sagrada Família to understand Gaudí's great revolution: a forest of columns that supports tonnes of stone without the need for buttresses. The key lies in the parabolic arches, a solution that uses the laws of physics to make the stone, rather than weigh down, ascend.

Through three interactive chapters — Nativity, Passion and Glory — the special 'Sagrada Família: 100 Years after Gaudí' reveals the secrets of a work that has been under construction for more than 140 years. The Sagrada Família has survived wars and pandemics and has become the tallest Catholic temple in the world.

This chapter includes images provided to RTVE by the Fundació Junta Constructora del Temple Expiatori de la Sagrada Família.