Inside the church at Gethsemane, at the base of the Mount of Olives.  People are shown here kneeling next to "the" rock that Jesus prayed at, which is at the alter in this church. [Matt 26:36-57; Luke 22:39-53]    "...yet, not my will but Yours be done."

...this is the outside of the church at Gethsemane.