Cagliari

Walk west along Via Università for 4 minutes — the buff-coloured 14th-century citadel walls rise on your left, jasmine spilling from walled gardens — and Piazza Palazzo opens suddenly with the cathedral's white Romanesque-Pisan façade dead ahead. The front was rebuilt in the 1930s to its medieval design and looks best in this late-morning side light, with the ochre Palazzo Regio next door framing the composition. Inside (3 minutes if you're curious) sits Guglielmo's 1162 pulpit, the oldest in Sardinia.

Tip: Stand at the corner of Via Lamarmora with your back to Palazzo Civico — from here the cathedral, the bell tower, and the regal palazzo line up in a single frame, and the tour groups never shoot from this angle (they cluster on the steps). The cathedral closes for siesta at 12:30 sharp; you have a ten-minute window if you want the pulpit peek, then move on.

Walk three minutes west along Via Università and the limestone watchtower rises at the citadel's edge, its small carved elephant still wedged into the south-east face since 1307. The Aragonese-Pisan tower was the gate that controlled all of Castello; climbing the open wooden staircase to the top puts you eye-level with the cathedral dome and the cruise ships docked in the port below, a higher vantage than Bastione on the opposite axis.

Tip: The carved stone elephant is on the south-east face about 10m up — easy to miss because you arrive from the north side; circle around before you climb. Cruise groups arrive in waves around 11:15, so go up at 10:45 and you'll have the open top to yourself. Skip the combined Torre San Pancrazio ticket — the views overlap and you've already done the panorama at Bastione.

Descend the Scalette Santa Chiara for 7 minutes — a stone staircase that drops you straight out of Castello into Piazza Yenne and the Marina district. Turn into Via Napoli and Su Cumbidu's open door spills the smell of slow-cooked sausage ragù onto the pavement. This is the city's working trattoria — bare wood tables, Sardinian grandmothers in the kitchen, and a menu of fregola, malloreddus and porceddu that hasn't needed changing in decades.

Tip: Order the malloreddus alla campidanese (€8 — Sardinian gnocchetti in saffron-tinted sausage ragù, the island's defining pasta) and a quarter-litre of cannonau (€3). Add a slice of seadas with honey for dessert (€4) if you have room. They don't take lunch reservations, but arrive at 12:15 sharp and you'll be seated immediately; show up at 13:15 and the wait stretches past 30 minutes.

Walk 10 minutes east along Via Roma's columned waterfront to the Marina Piccola bus stop, then ride the PF bus (€1.30, 15 minutes) to Poetto's western end at the foot of Sella del Diavolo — the dragon-shaped headland that gives the gulf its silhouette. From the base, the full seven-kilometre arc of pale-gold sand and translucent shallows rolls out in one direction; the unsigned summit path climbs gently in the other. The water stays bath-warm into October — wade in to your knees even if you didn't pack a suit.

Tip: Climb Sella del Diavolo from the Marina Piccola side — look for the dirt path behind the harbour office (no sign, that's the point). The 25-minute ascent is rocky but easy, and most tourists never realise it's walkable, so the summit benches are almost always empty. Shoot south for the wild headland coves, north for the city silhouette over the salt lagoons in golden hour. Skip the central kiosk sun-beds at €25 a pair — the public sand 100m either side of any kiosk is free and the same fine grain.

A five-minute stroll back along Lungomare Marina Piccola as the gulf turns gunmetal blue under the marina lights — fishing boats clinking, the limestone face of Sella del Diavolo glowing pink behind you. L'Approdo's wooden deck juts out over the harbour itself; the kitchen runs on what came off the day's boats, and the menu rotates with the catch.

Tip: Order the fregola con arselle (€18 — saffron pasta-pearls with Sardinian clams, the dish of the island) and the bottarga grattata di muggine starter (€12 — cured mullet roe shaved over carasau crackers); that combination separates a local meal from a tourist plate. Reserve a deck table 24 hours ahead — the indoor room is fine but you're paying for that water-edge view. Pitfall: avoid the brightly-lit cocktail kiosks at Poetto's central section (Stops 6–8) — they push €15 spritzes with stale prosecco and harass solo diners; the real aperitivo scene is all on this quieter western Marina Piccola side.

Exit the bastion through Piazza Indipendenza and walk five minutes uphill along Via Università — the medieval gates of Castello close in around you. The Tower of the Elephant (1307) is one of two surviving Pisan defensive towers; climb the wooden inner staircase through four open levels for terracotta rooftops, the cathedral dome, and limestone walls dropping straight to the harbor. Late morning the light is still soft enough to photograph through the open arches without burning out the sky.

Tip: Look at the small carved stone elephant just above the street-level gate before you climb — it's the original 14th-century piece from which the tower takes its name. Most visitors walk past and never see it.

Walk three minutes south from the tower along Via Lamarmora to a corner trattoria where Castello residents and city-hall workers queue at noon. Order the malloreddus alla campidanese (Sardinian gnocchetti with sausage ragù and saffron, around €11) — it is the dish of southern Sardinia, and Sa Piola does it without showing off. Close with a half-portion of seadas (fried sheep's cheese pastry drizzled with bitter honey, €6) and a glass of Cannonau.

Tip: They don't take reservations for lunch and seats fill by 12:45 — arrive at 12:30 sharp and ask for the tiny back saletta; it's quieter than the front and the waiters get to you faster.

Climb Via Università five minutes further north from lunch into the Cittadella dei Musei, the museum complex crowning Castello. The reason you came has its own room: the Giants of Mont'e Prama — 3,000-year-old Bronze Age stone warriors with eyes carved as two concentric circles, found broken in a single Sardinian field in 1974, unlike any sculpture in their Mediterranean era. Move down to the lower floor afterwards for the Nuragic bronze figurines — pocket-sized sailors and praying women from a civilization that left no writing.

Tip: Buy the combined Castello pass at the entrance (€15) instead of the single ticket — it also covers Torre San Pancrazio and saves the queue at the cathedral treasury later. Skip the audio guide; the English wall texts are excellent.

Walk five minutes back south down Via Martini to Piazza Palazzo. The 1930s neo-Romanesque facade is unconvincing — go straight inside, where the interior is darker, older, and astonishing: a baroque marble explosion of polychrome inlay, with two original 12th-century Pisan pulpits flanking the apse, carved by Guglielmo for the Duomo of Pisa and gifted to Cagliari in 1312. Descend to the crypt (Santuario dei Martiri) for 600 carved niches in walls that stay cold even in August; late afternoon, the western light catches the rose window and the nave glows.

Tip: The right-hand pulpit was originally a single piece — the Pisans cut it in half to fit on either side of the altar. Look for the seams running through the carved figures; it's a 700-year-old repair you can still trace with a finger.

Leave Castello through the Bastione, take the Scalette Santa Chiara down into the Marina district — eight minutes of descending lanes that smell of basil and frying oil. Lillicu has been open since 1938: white marble tables, paper tablecloths, communal benches, and the most uncompromising fresh fish in Cagliari. Order spaghetti ai ricci di mare (sea urchin, €18, seasonal) or fregola con arselle (Sardinian toasted pasta with baby clams, €14), then a whole grilled orata picked at the morning market — around €25 per fish.

Tip: Reserve by phone at least a day ahead (they don't take online bookings) and ask for one of the four small wall tables — the long communal one is fun but loud. Avoid the photo-menu restaurants along Via Sardegna with translated boards in five languages; they are the Marina's only real tourist trap — overpriced frozen fish, microwaved fregola, and they live off port arrivals.