Possible Clues:

• Building, foreign one, put up in very little time
• Greek character engaged in second commemorative work
• Commemorative statue, building etc.
• Lasting record of UN rising in importance
• Wren's lasting reminder of the Fire of London
• Shake fan, welcoming soldiers in memorial building
• Greek character in second statue?
• Commemorative statue
• Greek character in short time creates shrine
• Greek character visits second gravestone, possibly