The old town of Alghero, on the northern Sardinian coast is a great place to spend a day or even a weekend to soak up the distinctly Catalan feel to it dating from the XIVth century. Things to see in and around the old quarter include the Cathedral, the port, the Piazza Civica and the numerous towers along the coastal wall protecting the town. While walking the streets you can also do a bit of window shopping at the numerous boutiques and souvenir shops before stopping for a gelati in one of the many cafes.
Just outside Alghero other sites of interest include Neptune's Grotto, accessible by boat from the port, Anghelu Ruju - a nuraghic site and the nuraghe of Palmavera.
There are thousands of Nuraghi on the Island of Sardinia. The nuraghi are stone built towers where the Nurghic people settled. Some date back as far as 1500 B.C. and are a testament to the architectural prowess of Sardinia's first inhabitants. The oldest, biggest and best-known Nuraghe is Su Nuraxi, south of Oristano and north of Cagliari, but if you can't get there, don't worry, there are only a few 1000 more around the island to visit and are well sign-posted for visitors.
The Sinis Peninsula is a protected marine area on the western coast of Sardinia with a diverse ecosystem. The area consists of several excellent beaches (san Giovanni di Sinis, Is Arutas), a large lagoon and ancient village ruins at Tharros near the main town of Cabras. You can find more information on the Sinis Peninsula at www.parks.it
With the Gulf of Oristano as a backdrop and a Spanish tower overlooking it, the ancient Roman ruins of Tharros are popular amongst visitors to Sardinia. The settlement dates back to around 800 B.C. when the Phoenicians first settled on the peninsula. Among the ruins are ancient baths, aqueducts, temples, houses and the two upright columns just off the sea. A small entrance fee is due to visit the site and it is well worth a look.
Cagliari is the hub of Sardinia and boasts a beautiful old district or "Castello", an Archeological Museum with an excellent collection of Nuraghic artefacts, botanical gardens and an impressive port.
The village of S'Archittu can be found on the western coast of Sardinia about 10 km north of the town of Riola. The village has a great beach for sunbathers, snorkellers and children alike. Located in a small bay, the beach is approximately 1 km long, has several cafes and pizzerias on the promenade above, plenty of rock pools for the kids and some excellent snorkelling on the mediterranean "reef". Besides this, the village has a few markets, a general store and a butcher.
About 10 kms north of Olbia the Costa Smeralda is known for its holiday villas, beautiful beaches and opulence in the marina of Porto Cervo.