This research delved into the importance of investing in historical sites within the Sultanate of Oman. Harat Al-Aqr (Al-Aqr Alley), a historical site, was selected as a case study for two primary reasons: its historical value and the investment experience associated with it. The study aimed to accentuate the alley's historical significance, define the envisioned investment objectives, and outline the challenges encountered during the initial stages of investment, along with the gains and accomplishments achieved.

The research was anchored in the hypothesis that investing in Oman's historical sites could yield direct and indirect economic returns, contributing to the national economy's resources. The study sought to leverage the experience gained from Harat Al-Aqr and apply it to other Omani alleys. To fulfill its objectives, the research employed historical, descriptive, and case study methodologies, utilizing interviews as a primary research tool.

The study was structured into an introduction and three main segments: Theoretical Framework, elucidating the importance of investing in historical sites; Historical Value of Harat Al-Aqr; and Investment in Harat Al-Aqr, encompassing its origins, challenges, benefits, and achievements. The conclusion encapsulated the key discoveries of the research.

Several conclusions were drawn from the study, primarily highlighting the viability of investing in heritage and culture sectors, especially in historical sites. The investment experience in Nizwa stands as a model that could be replicated under similar conditions and factors.

Keywords: Investment, historical sites, Harat Al-Aqr, Nizwa, Sustainable development