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Photo: Olbia Turismo, CC BY-SA 4.0 via Wikimedia Commons
One of the so-called tombs of giants, a Nuragic tomb on the South of Olbia. This one is considered to be one of the largest ones and better preserved in Sardinia.
The Giants' grave of Su Mont'e s'Abe is an archaeological site located in the municipality of Olbia, in the Italian province of Sassari.
© OpenStreetMap contributors
Remains of the 13th-century castle.
An open-air theatre designed by the famous Italian architect Giovanni Michelucci.
Collegio di San Vincenzo
A Liberty villa in pseudo-Gothic style by the same architect. It's a private property, which belongs to a religious college. Still reportedly visitors are able to pass the gates and see the building from outside..
Palazzo comunale
A villa in a Liberty style was designed by architect Bruno Cipelli for Colonna family. It now hosts the Town Hall.
Built in the middle of the 18th century. It has a characteristic tiled polychrome dome added in 1939.
This austere Romanesque basilica minore was built in the 11-12th centuries. It is considered one of the most important monuments in the Gallura region.