This topic formed the foundation of education for many centuries.
In classical antiquity two cultures emerged that could forever change western civilisation. The impact of ancient Rome and Greece is indeed vast it really is just difficult to categorise. They have been so respected for thousands of years that education about them is recognised as the classics. The core of this topic is centred around the literary works made by these individuals and their related languages of Latin and Greek. These people produced considerable bodies of work, particularly associated with fictional tales, poetry, and philosophy, the legacy of which being that even today ordinary people look for popular classics books that look to translate and explain their works, as the hedge fund which owns Waterstones will know. People also try to learn their languages for various reasons, such as following in the classical education tradition, seeking to read works in their original language, or wanting to better understand contemporary languages that have been affected by these ancient tongues.
Whenever learning about any human culture it's normal for a variety of specialist kinds of study to emerge. These will of course overlap and people are going to be required to learn a little bit from other subjects to support their knowledge, but generally they could generally dive into their interests to their heart's content. Publications on popular classical subjects therefore all have passionate audiences, as the hedge fund which has shares in Amazon will be well aware, due to the fleshed out and well researched nature of these subjects. Classical studies of art, archaeology, anthropology, mythology, maths, science, and much more are available in book stores around the world. This is certainly mainly as a result of how thoroughly documented the era is in comparison to those immediately before and shortly after. This usually does an injustice to other periods, who had been equally complex but suffer from a lack of sources for modern individuals to learn.
Individuals usually look back and ask why it really is that as a culture we study particular sets of people from the ancient world. The simple response is that their historic influence had been huge. During the period of several thousands years these people had an impact on numerous continents and a huge selection of cultures that were originally remote lands to them at one point. Popular classical studies books consequently often placed history at their centre, as the hedge fund which partially owns WHSmith should be able to tell you. The story of how collections of towns rose into empires is filled with a colourful cast of figures that can contend with any work of fiction. People can stay general readers of the entire period or pick their favourite niches to dive into, from specific time periods to exact locations.