Wignacourt Museum

Where it sits. The museum occupies the former college of chaplains attached to the church of St Paul in Rabat, on the terrace beside Parish Square and a short walk from Mdina's gate. From the street it presents a plain Baroque front of 1749 with a heavy doorway, and there is little to indicate that the building is the entrance to four distinct layers of Maltese history stacked vertically on one site: a Baroque residence, a venerated cave, a late-Roman catacomb and a Second World War air-raid shelter, all reached from the same ticket desk.

Wignacourt's college. Alof de Wignacourt, Grand Master of the Order of St John from 1601 to 1622, was a builder — the aqueduct that carried water to Valletta and the coastal towers that carry his name are both his. He also endowed a college of chaplains to serve St Paul's Grotto, giving the shrine a permanent clerical establishment. The present building replaced the original quarters in the mid-eighteenth century and housed the chaplains until the college's functions faded; it opened as a museum in the twentieth century and was substantially reorganised in the 2000s.

The collections upstairs. The piano nobile holds the art. There are seventeenth and eighteenth-century paintings of the Maltese Baroque school, works associated with Mattia Preti and with Antoine de Favray, church silver, vestments, reliquaries, illuminated choirbooks and a coin collection running from Punic issues through the Order to the British period. Rooms are shown partly as domestic interiors — a chaplain's apartment, a chapel, a sacristy — which keeps the visit from becoming a march past display cases. Among the more unexpected pieces are ship models and votive paintings from a maritime culture that treated shipwreck as a live risk rather than a scriptural episode.

Down into the rock. The stairs are the reason to come. One level down, a passage connects to St Paul's Grotto, the cave beneath the adjoining church where tradition places the apostle's three-month stay after his shipwreck. Deeper, a late-Roman and Byzantine catacomb runs under the building, part of the same vast cemetery system that produced the St Paul's and St Agatha's complexes nearby, with rock-cut loculi, canopied graves and one of the round agape tables at which families ate memorial meals. The chambers are cut into soft globigerina limestone, which is why so much of Rabat is hollow.

The shelters. The last layer is the most recent and, for many visitors, the most affecting. Between 1940 and 1942, as Malta absorbed one of the heaviest sustained bombing campaigns of the war, families dug shelters into the rock beneath their towns by hand, often extending existing catacombs. The system under this building runs to dozens of small chambers along narrow tunnels, each excavated by or for a particular household, some with the niches for a lamp and a statue still visible in the wall. The distance in the stone between a fourth-century grave and a 1941 shelter is a matter of a few metres, and walking it in one visit is the sharpest thing the museum does.

How the four levels fit together. The stack is not a coincidence of curation. The chaplains' college was built where it is precisely because the grotto was beneath it; the grotto was venerated because the rock could be cut and shaped; the catacomb exists because the same rock lay just outside the Roman city's burial boundary; and the shelter exists because that honeycomb was already there when the bombers came in 1940. One geological accident — a thick, workable bed of soft limestone under a defensible plateau — produced a Roman cemetery, a Christian shrine, a Baroque institution and a wartime refuge on the same square metres. Few sites anywhere compress two thousand years into so short a staircase, and the museum has the sense to let the sequence speak rather than over-explaining it.

Getting there and timing. Buses 51, 52 and 53 from Valletta reach the Rabat terminus in around 35 minutes; from there it is two minutes on foot, or ten minutes downhill from Mdina's main gate. Admission is charged separately from Heritage Malta's pass, since the museum belongs to the parish foundation rather than the state. Allow ninety minutes to two hours to do all four levels properly. The upper floors involve stairs and the underground route involves more of them, along with low ceilings and uneven floors, so access is limited; the ground-floor rooms can be seen without descending. Summer visitors gain from the constant cool below ground, and the site pairs naturally with the basilica next door and the catacombs five minutes up the road.