Cádiz

8-minute stroll northwest up Calle Compañía, passing centenarian confectioners with almond-sweet windows. Torre Tavira is the highest point of the old town at just 45 metres, and its 1700s camera obscura projects the living city onto a concave dish — an analog satellite feed three centuries before satellites. The rooftop gives you all of Cádiz in one frame: cathedral dome, watchtowers, and the Atlantic wrapping three sides.

Tip: Book the 10:30 camera obscura session online at torretavira.com — drop-ins wait 40+ minutes in peak season. The session is narrated in Spanish but entirely visual; skip the English tour (longer queue, identical images).

6-minute walk north down Calle San Francisco into Plaza de Topete, with its blue-tiled fountain and flower stalls. The 1838 market hall now houses a 'Rincón Gastronómico' food court — twenty-plus stalls plating whatever Cádiz pulled from the Atlantic at dawn. Grab a paper cone of mixed pescaito frito and a glass of manzanilla, then eat on the benches outside while the plaza buzzes around you.

Tip: Order the mixed fry cone at 'Las Flores' stall for €10 — adobo, boquerones, puntillitas — and eat standing in Plaza Topete. Avoid the sit-down restaurants fronting the market building: markup is triple and the fish is from the exact same morning batch.

10-minute walk west along Calle Sagasta through Plaza de Mina — the square where Manuel de Falla was born, shaded by Indian laurels. Parque Genovés is Cádiz's oldest park (1892), with topiary carved into chess pieces and a grotto waterfall, and the adjoining Alameda Apodaca promenade delivers your first face-to-face with the open Atlantic: indigo, wind-whipped, endless. Sit on a clifftop bench and let the sea breeze reset your legs for the second half of the day.

Tip: Climb the small staircase beside the waterfall grotto to a hidden clifftop bench facing the bay — it's where Cádiz abuelitas sit to read. Free, shaded, and the finest pause-breath moment in the city.

12-minute coastal walk down Paseo Fernando Quiñones, with Castillo de Santa Catalina rising sand-coloured on your right like a mirage. La Caleta is the most filmed beach in Cádiz — the opening of 'Die Another Day' used it as Havana — and a 750-metre stone causeway stretches into the Atlantic to the 17th-century Castillo de San Sebastián. Walk the full causeway out and back: the light turns gold, waves slap the stones either side, and this is the photograph you came to Cádiz to take.

Tip: Wear sneakers, not sandals — the causeway stones are uneven and sea spray soaks them. Check tidetimes.es before you commit: at high tide the final 50m is cordoned off, so aim to arrive within the two-hour window either side of low tide for the full walk.

8-minute walk back through Barrio de la Viña — the gritty fishermen's quarter that invented Carnaval — where you'll almost certainly catch someone rehearsing a chirigota from an open window. El Faro, opened 1964, is the shrine of pescaito frito and the benchmark every other Cádiz kitchen measures itself against. Order the tortillitas de camarones (€14, paper-thin shrimp lace) and urta a la roteña (€26, local white fish in tomato-pepper sauce) — both non-negotiable.

Tip: Walk in at 19:30 sharp — Spanish locals still aren't eating and you'll get a table without a reservation; after 21:00 the wait stretches to 45 minutes. If the dining room is full, slip into the tapas bar at the front (same kitchen, half the price). Final warning: avoid any restaurant facing Plaza de San Juan de Dios near the port — tourist-priced, microwaved, soulless. The real Cádiz eats here in La Viña.

Exit the cathedral on the north side and follow Calle Compañía through the chess-piece lanes — 6 minutes uphill to the city's tallest old watchtower. Midday is the only window when the camera obscura works at its best, with the sun directly overhead projecting a razor-sharp live image of Cádiz onto the dark room's white dish. The 45-meter rooftop terrace afterwards gives you the inland counterpoint to the cathedral's seaward view.

Tip: Camera obscura sessions in English run on the half hour and last 15 minutes — go straight to the dark room first, then circle back through the museum panels. On a windy day the projected sailboats in the bay seem to move in real time.

Walk two blocks south to Plaza de las Flores — you will smell the frying oil before you see the place. Order a cucurucho mixto (mixed fried-fish paper cone, €10) of whitebait, calamari and small shrimp, plus a plate of tortillitas de camarones (€4 each), and eat them standing at one of the marble bar tables. The square outside is the city's most photogenic, ringed by the old post office and the flower stalls that give it its name.

Tip: No reservations, and they stop frying at 15:30 sharp. Walk in before 14:00 or you'll wait. Pair with a tinto de verano (€2.50) — never sangria, which is for tourists. They wrap leftovers in the same wax paper to take to the beach.

Walk 8 minutes east through the El Pópulo neighborhood, the medieval kernel of the city, to find the entrance tucked behind a normal apartment block. This is Spain's oldest known Roman theater (1st century BC), buried under a thousand years of houses and only rediscovered in 1980 — you walk straight inside the original underground gallery. Afternoon visits are best because the cathedral above casts shade over the open cavea.

Tip: Free entry. The interpretation center plays a 10-minute loop video most people sit through — skip it and head to the rear viewing window upstairs, where you can see the cathedral's foundations resting directly on Roman stones.

From the Roman theater, drift 5 minutes east to the harbor-facing Plaza de San Juan de Dios with its monumental city hall, then arc north along the sea wall to Alameda Apodaca. This is the locals' golden-hour ritual: the 18th-century promenade is shaded by two enormous ficus trees, with the bay opening up beyond the iron railings. End at the Baluarte de la Candelaria as the sun drops behind the bay.

Tip: The two giant ficus trees on the Alameda are over 300 years old — sit on the bench directly underneath them and shoot upward through the aerial roots; it is the one Cádiz photo Instagram has not yet ruined.

You are already on the Alameda — Balandro is the corner restaurant with arched windows facing the bay. A genuine Gaditano institution, run by the same family for decades, serving the catch of the day with a serious wine list. Order ortiguillas fritas (fried sea anemones, €14) — a Cádiz specialty almost impossible to find outside the province — and tartar de atún rojo (red tuna tartare from Almadraba, €18).

Tip: Reserve 24 hours ahead and ask for a window table — the bay sunset through the arched glass is part of the meal. Avoid the tourist restaurants on Plaza de San Juan de Dios with photo menus and waiters waving you in: they reheat frozen seafood at triple the price, and the harbor area is where overpriced 'paella' is sold by the kilo to cruise day-trippers.