Miramar Palace

The Miramar Palace was built in 1893 by order of the Spanish royal family, and Donostia has been traditional since the end of the 19th century. the place where members of the royal family spent the summer. In 1931 the building was confiscated by the Republic and passed into the hands of the city administration. During Francoism it went back to the (no longer existing) monarchy and was sold in 1963. Cultural events and the Basque Summer University take place in the palace. Until the completion of the new Musikene Music Academy in the summer of 2016, the institution had its temporary headquarters here.
Source: baskultur.info

The palace was built in 1893 by order of the Spanish royal family.

From up there you have a beautiful view over the bay