Four monumental tomb facades carved into the cliff above the main valley, reached by a stairway from the colonnaded street. From south to north they are the Urn Tomb, the Silk Tomb, the Corinthian Tomb, and the Palace Tomb — the last with a five-storey facade so wide that part of it had to be built up in masonry where the cliff ran out.
The interiors are mostly empty rectangular chambers, the original sarcophagi long gone, but the streaked rock of the Silk Tomb — bands of red, yellow, white and grey laid down in the cliff — is the most photographed sandstone in Jordan. The terrace in front is a good place to look back across the basin: the Treasury, the theatre, the colonnaded street all line up in one sweep.