While the modern skyscrapers are designed as instruments of economy and industries, their counterparts in the ancient world were largely defined by the collective religious fervor of the culture. However, in spite of the seemingly theistic inspirations, the science and architectural ‘technology' supporting these huge man-made ancient structures are incredible to say the least. But that is a discussion for another list; for now, let us take a gander at the ten tallest man-made architectural triumphs from our ancient world.