At the church of the Holy Sepulchre, we got a tour from an Augustine monk who showed us the tomb of Joseph of Arimathea (not the tomb that Christ was laid in; the one that he acquired after, since the fist tomb was overrun by Christ’s disciples). You have to descend down to the lower levels of the church to get to it, since that all happened two thousand years ago, and people have been building things over the old city of Jerusalem for two millenia.
The tomb is a small cave with no lighting; you have to take a candle in with you. Of course, the candle light adds to the early-Christian effect. : )