Explore this 14th century hilltop fortress with panoramic views of the city and gulf. Look for the exhibition space inside the tower that often hosts local art.

Visit the Catalan Gothic cathedral in the Castello district with its ornate Baroque chapel. Go down to the crypt to see the 13th century marble altarpiece.

Head to the large covered market on Via Cocco to browse fresh seafood and local cheese stalls. Grab a tray of malloreddus from the hot food vendors near the produce section.

Arrive early to beat crowds at this UNESCO World Heritage site in Barumini. Join the guided tour to understand the complex 3-tower structure and its Bronze Age purpose.

Drive east into the Supramonte region near Oliena to see this powerful karst spring emerging from limestone cliffs. The vibrant turquoise pool is surrounded by lush vegetation.

Take a morning ferry from Palau (30 min crossing, round trip about 25 EUR). Look for boat tours that stop at Spargi and Budelli islands for swimming and photo stops. Book in advance at the Palau port ticket offices.

Drive or take a bus along the SS125 coastal road between Palau and Arzachena. Pull over at scenic overlooks like Belvedere di Liscia Ruia for the best emerald water views. No admission fee for roadside viewpoints.

Walk through the Piazzetta, the central square designed by Luigi Vietti, and browse the small Maritime Museum near the marina. Entry to the square and port area is free; museum entry is about 5 EUR.

Visit this 19th century Piedmontese fortification overlooking Palau and the archipelago. Reach it by a short uphill walk from Palau center. Entry is free and the ramparts offer panoramic views of the Maddalena islands.

Take the guided tour (about 40 minutes) through this massive sea cave with stalactites and stalagmites. Arrive early to beat crowds. You can reach it by bus from Alghero or by boat from the port. The 654-step stairway (Escala del Cabirol) is the main entrance.

Just a short drive from the grotto, this famous white sand beach faces the Asinara island. The water is shallow and turquoise. Parking costs about 2 EUR per hour and fills up fast, so arrive before noon.

Arrive early to beat crowds. Walk east from the main beach along the limestone cliffs to find hidden sea caves accessible only by swimming or a short scramble.

This pebble beach requires a 45 minute hike from the parking lot near Bari Sardo. Bring sturdy shoes and water; the trail is marked but rocky.

Head to the Sirena section near the marina where the cafes and restaurants cluster. Walk the long promenade past the old artillery battery.

Located inside the Palazzo degli Scolopi on Via Sant'Antonio. The permanent collection covers Sardinian ceramic traditions from Nuragic to modern times.