church of san juan de gaztelugatxe on top of an island

aketx arch atlantic baptist basque bastion bay bell bermeo bilbao biscay bridge building catholic christian church climbing constructions country de doniene europe euskadi faasect ade formation gaztelugatxe gaztelugatxeko geological geology gulf hermitage hill island islet john juan nature ocean of outdoors religion religious rock san scenic sea shipwreck spain stairs stone the tower views walking water waves