**6. Conclusions**

The narrow mausoleum typology, despite having a generic construction form similar to that of traditional mausoleums, has a very unique visual character that is characteristic of the Conchada Cemetery. This type of mausoleum assumes a wide variety of architectural styles and is presented in two types: one in which the entrance is made at the front and the other with the entrance at the back. The narrow mausoleums with an entrance from the back would be more economical, as they do not have a door made of decorative metalwork; however, they still have a rich and varied iconography.

The narrow mausoleums form remarkable groups which distinguish the Conchada Cemetery from others spread across the country. Considering this fact, it would be important to deepen its study and promote its protection and classification as a differentiated funeral heritage in the European panorama.

**Author Contributions:** Conceptualization, J.M.; methodology, J.M.; validation, J.M., L.B., E.V. and F.G.B.; formal analysis, J.M., L.B. and F.G.B.; investigation, J.M.; resources, F.G.B.; writing—original draft preparation, J.M.; writing—review and editing, J.M., L.B., E.V. and F.G.B.; visualization, J.M.; supervision, J.M.; project administration, J.M.; funding acquisition, F.G.B. All authors have read and agreed to the published version of the manuscript.

**Funding:** This work was partly financed by FCT/MCTES through national funds (PIDDAC) under the R&D Unit Institute for Sustainability and Innovation in Structural Engineering (ISISE), under reference UIDB/04029/2020.

**Institutional Review Board Statement:** Ethical review and approval were waived for this study, since the research paper deal only with funeral architecture and built heritage. No humans or animals were involved in the study.

**Data Availability Statement:** Not applicable.

**Acknowledgments:** In this section, you can acknowledge any support given which is not covered by the author contribution or funding sections. This may include administrative and technical support or donations in kind (e.g., materials used for experiments).

**Conflicts of Interest:** The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results.
