The Sant Vicent Martir Archaeological Crypt is a compact underground site near Valencia Cathedral. Its displays bring together finds from several layers of the city, including a Visigothic altar, Roman mural fragments, Islamic-era objects, and a sculpture linked to Saint Vincent the Martyr.
It works best as a short stop while exploring the old centre. The crypt is not large, but it gives a clear, close look at how much history is stacked beneath Valencia's streets.