Niebla's ramparts dating from the time of the Almohads (a Berber dynasty reigning over Andalucía in the 12C) were built with clay from the banks of the Río Tinto. This explains their reddish colour, which is particularly lovely when lit by the rays o..

The church was built on the ruins of a mosque, keeping a few of the features (such as the orange-tree patio), which mix in with the dominant Gothic style.

Amazingly, the church is cut in half by a street. Furthermore, the buildings it occupies contained both a mosque and a synagogue before the Reconquest.

The old 15C alcázar - a Moorish fortress - has kept some of the remains of an earlier Moorish castle.