UPDATE: Just received a translation -
“La Nit de les Religions de Barcelona” és una jornada de portes obertes dels centres de culte i d’entitats vinculades a diferents tradicions religioses o espirituals, en la qual es duran a terme diverses activitats. Aquesta proposta sorgeix del Grup Jove de Diàleg Interreligiós i Interconviccional d’AUDIR (http://audir.org/grup-jove/) i s’emmiralla en “La Nit de les Religions de Berlín” i, com aquesta, vol aproximar la ciutadania a les comunitats religioses perquè les coneguin millor."
"The Barcelona Nest of Religions is an open-day for cultural centres and organizations linked with various religious or spiritual traditions, where various activities will take place. This proposal arose out of the AUDIR Interreligion and Interfaith Dialogue Youth Group and is based on the Berlin Nest of Religions and is aimed at bringing the people closer to religious communities, closer so that they can get to know them better."
According to the program this open-day includes all kinds of religions from Catholic and protestant churches and orthodox churches to Wicca, or witchcraft.