Tombs of Prophets

Tomb of Hz. Habil عليه اسلام (Abel)

Located on the outskirts of Damascus. This burial site is alleged to be the tomb of Hz. Habil عليه اسلام, the son of Prophet Adam عليه السلام and the first person to be murdered in the world

Al-Zabadani, Syria

Hasan

There might be some doubts regarding the authenticity of this site. Although the local belief in spirituality and reverence is very strong (making it a close contender for the most prominent site in that particular category)

Example: Tomb of Hz. Musa عليه اسلام