Complex sentence: The architects extended the property to Eighth Road and restructured the inner part building two levels, designed wide halls and improved the façade with carved stones; the complete ornamentation works were carried out by the Swiss sculptor Luigi Ramelli.
Split into simpler sentences: The architects extended the dimensions of the property to Eighth Road and restructured the inner part of the building by creating two levels. The complete ornamentation works were carried out by the Swiss sculptor Luigi Ramelli.