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This country's museum, known colloquially as The Sofia, makes up one vertex of its "Triangle of Art." One architect from this country was sponsored by the Guell family to design a series of Art Nouveau park benches and build the Temple of the (*) Holy Family. One museum in this country was designed using computer technology to resemble a ship. For 10 points, name this European country that is the location of a Frank Gehry-designed Guggenheim Museum and the Prado.
This country's museum, known colloquially as The Sofia, makes up one vertex of its "Triangle of Art.
{Spain}