Fort San Andres is a small but historically significant fort on the southern waterfront of Port of Spain, near the ferry terminal. Built by the Spanish in the late eighteenth century, it is the only remaining structure from Trinidad's Spanish colonial period — all other Spanish-era buildings were demolished, burned, or replaced during British rule.
The fort has a compact footprint and surviving cannon emplacements. It is maintained as a heritage site and is accessible to the public. Its location near the waterfront places it on an easy walking route alongside the modern ferry terminal and the downtown business district.