호아 루(Hoa lu)
http://en.wikipedia.org/wiki/Hoa_L%C6%B0_District
http://www.vietnam-beauty.com/top-destinations/destination-in-the-north/11-destination-in-the-north/244-hoa-lu-ancient-capital.html
http://www.vietnam-beauty.com/top-destinations/destination-in-the-north/11-destination-in-the-north/244-hoa-lu-ancient-capital.html
