The use of effective project management practices is crucial to the success of any project. Project management is seen to be a more successful and resourceful strategy for reaching a goal than the other methods, procedures, and strategies currently accessible. The research was carried out to determine the project management maturity level of the Adwa Zero Kilometer Museum Project using the ten project management knowledge areas defined by PMBOK and identify its weakness and strengths. The research followed a mixed approach and employed a descriptive research methodology. Primary data was collected using survey questionnaire that were devised based on the literature for the assessment and distributed to selected members of the project. As to secondary data; related books, articles, journals and publication from the project office were reviewed Percentages and mean values were used to analyze the data collected. As a result, the study's findings revealed that project management practice is on average (Level 3) maturity level indicating that the basic project management processes and documentation exist in the project, but they are not considered as an organizational standard that fits the scale of a mega project. The findings of the study showed that, some project management knowledge areas i.e. Project, risk, communication and integration management were at a low maturity level in the project while, project human resource, scope, cost and procurement management were practiced at a relatively good maturity level. The project lacks project management professionals and training opportunities are limited. The study recommended that the project management team put in additional effort to improve the Project management practice by strengthening the focus on the knowledge areas with a low maturity level. The project needs to be equipped with project management professionals and consistent trainings in project management knowledge areas and their application must be provided to project team members. Continuous improvement based on lesson learned needs to be encouraged. In addition, improving management oversight, integrating project management processes, ensuring the establishment of effective risk management standards and participating key stakeholders during planning and necessary phases, collecting and compiling project data for future reference and for distributing lesson learned and an all-inclusive monitoring and evaluation system are necessary have been recommended.