The ancient peoples of Rome, Greece were very proud of their architectural achievements. The monuments they built projected the power of the ancient gods and goddesses, along with that of the rulers of those times. Architectural types on coins are very interesting to collect, as the ancient world had many temples, arches, camp gates, columns, roads, bridges, shrines, city gates, statues and so much more! Most of these monuments are now long gone, however these coins remain. A great area to collect!
For further reading, I recommend this book that delves deeper into the subject.
“Monumental Coins” is a bountiful tapestry of numismatics, history and architecture that explores the buildings found on ancient coins and the historical and cultural importance of these structures. In addition to a comprehensive gallery of actual coin photos, coins are illustrated by line drawings to reveal fine structural details. Computer-generated plans of the buildings, along with freehand illustrations of building reconstructions allow complete understanding of these ancient wonders.