Classical architecture inspired renaissance architects, and the style was also revived in the century.

Classical architecture inspired Renaissance architects, and the style was also revived in the mid-18th century.

This style is known as Neoclassical Architecture, as is featured in many European and North American buildings of political, religious or social status, it emerged from the desire to return to the Roman and Greek style, which was perceived as purer and ideal form. The iconic palladian-style columns invoke the ideas of Empire, wealth and status, subsequently, this style became the chosen style of many European empires as they expanded throughout the world. 

The answer is cave paintings