* Archaeologist: This is the most common term for someone who studies the past through the examination of material remains, including ruins.
* Architectural Historian: This term applies to those who study the history of architecture, often focusing on the development of building styles and techniques, which can be seen in ruins.
* Historian: While historians generally study written records, some may focus on the history of a particular site or region, which would involve studying its ruins.
* Classical Archaeologist: This term refers to those who specialize in the study of ancient Greek and Roman civilizations, often including the examination of ruins.
* Egyptologist: This term is used for those who study ancient Egypt, often focusing on the interpretation of hieroglyphs and the analysis of ancient Egyptian monuments and ruins.
* Epigrapher: This term describes someone who studies inscriptions, which can be found on ruins and offer valuable information about the past.
The specific term used will depend on the context and the specific focus of the study.