Pantheon, Rome
Different formulae were followed in the Pantheon, Rome and a small temple at Baalbek (usually called the "Temple of Venus"), where the door is behind a full portico, though very different ways of doing this are used. In the Pantheon only the portico has columns, and the "thoroughly uncomfortable" exterior meeting of the portico and circular cella are often criticised. At Baalbek, a wide portico with a broken pediment is matched by four other columns round the building, with the architrave in scooped curving sections, each ending in a projection supported by a column.