Under the pavement of the cloister as well as under the Claustro dos Corvos is a great cistern. On the south was the kitchen and the oil cellar, on the east the dispensary, and on the west a great oven and wood-store with three large halls above, which seem to have been used by the Inquisition.[151] The lodgings of the Dom Prior were above the cloister to the north. Like the Claustro da Micha, the Claustro dos Corvos has plain round arches resting on round columns and set usually in pairs with a buttress between each pair. On the south side, below, were the cellars, finished in 1539, and above the library, on the west, various vaulted stores with a passage above leading to the library from the dormitory. The whole of the east side is occupied by the refectory, about 100 feet long by 30 wide. On each of the long sides there is a pulpit, one bearing the date 1536, enriched with arabesques, angels, and small columns. At the south end are two windows, and at the north a hatch communicating with the kitchen. The Claustro da Hospedaria, as its name denotes, was where strangers were lodged; like the Claustro dos Corvos each pair of arches is divided by a buttress, and the round columns have simple but effective capitals, in which nothing of the regular Corinthian is left but the abacus, and a large plain leaf at each corner. Still, though plain, this cloister is very picturesque. Its floor, like those of all the cloisters, lies deep below the level of the church, and looking eastward from one of the cell windows the Coro and the round church are seen towering high above the brown tile roofs of the rooms beyond the cloister and of the simple upper cloister, which runs across the eastern walk. (Fig. 85.) This part of the building, begun about 1539, must have been carried on during João de Castilho's absence, as in 1541 he was sent to Mazagão on the Moroccan coast to build fortifications; there he made a bastion 'so strong as to be able not only to resist the Shariff, but also the Turk, so strong was it.'[152] The small cloister of Santa Barbara is the most pleasing of all those which João de Castilho was able to finish. In order not to hide the west front of the church its arches had to be kept very low. They are three-centred and almost flat, while the vault is even flatter, the bays being divided by a stone beam resting on beautifully carved brackets. The upper cloister is not carried across the east side next the church; but in its south-west corner an opening with a good entablature, resting on two columns with fine Corinthian capitals, leads to one of those twisting stairs without a newel of which builders of this time were so fond. Going up this stair one reaches the cloister of the Filippes which João did not live to carry out.