St Mary's Tower, Hornsey

St Mary's Tower, Hornsey is the only piece of architecture remaining from St Mary's medieval parish church in Hornsey, now part of the environs of north London. The tower is the oldest building in Hornsey, though the exact date of building is not known. It remains a consecrated space.

Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).