The Odescalchi Castle and the tourist port are the main popular destinations for tourists.

Santa Marinella does not have a real historical center or meeting point but develops along the coast with a promenade assiduously frequented by bathers. For architecture lovers the main attraction is found in Capo Linaro, where the Pignatelli Princes had the architect Luigi Moretti build Villa Saracena overlooking the sea. After years of abandonment the villa has retuned to its ancient splendor thanks to careful restoration. The structure is currently included in the list of historic homes of Lazio and can be visited during special events.