http://www.tirupatidarshan.org/travels-plan/

Seven Hills...the divine abode of Lord Sri Venkateswara, are at a height of 2,820 feet above sea level. Covering a total area of about 100 sq.miles, the Seven Hills present the most picturesque panorama to the pilgrims. You want to more informations
check it here: http://www.tirupatidarshan.org/services/