According to the former Rabbi of the Western Wall, Rabbi Meir Yehuda Getz Zt”l said he’s seen it.
The Ark of the Covenant, which contains the Tablets, was constructed by Betzalel Ben Uri. It was placed inside the inner sanctum of the Temple in the Tabernacle, which was located in the Sinai Desert. The Ark had accompanied the children of Israel while they were wandering in the desert. It was placed in the Tabernacle in Shiloh and fell during the war with the Philistines. But after they were struck by a plague it was returned to the hands of the people of Israel, found in Kiryat Yearim, and was later brought up to Jerusalem by King David. It finally found its place in the Temple, which was built by King Solomon on Mount Moriah. The Ark was the holiest vessel, but towards the end of the period of the second Temple, it disappeared, and remained missing from the Holy of Holies throughout that time.