Gibraltar looks expensive until you walk it. The Nature Reserve costs £19, but the Rock's beaches, Commonwealth Park, harbour promenades and Line Wall Road bastions are free, and duty-free supermarkets make picnics absurdly cheap.
Gibraltar's only large public green space, opened 2014 on reclaimed land beside Line Wall Road. Free entry, open daily dawn to dusk, with lawns, a boating lake, palm groves and shaded benches facing the Rock's west face — the cheapest breakfast spot in town.
A continuous 16th-century Spanish-built defensive wall running the length of the western town, free to walk end to end. Cannon emplacements at Montagu, Orange and Wellington bastions sit open to the street with interpretation boards and harbour views.
Two free-to-walk marina boardwalks packed with superyachts, a floating casino and the Sunborn hotel ship. Benches face west across the bay to Algeciras, and the whole loop from Casemates and back takes under an hour at a stroll.
The Rock's southern tip, reached free on bus routes 2 and 3. Trinity Lighthouse, the Ibrahim-al-Ibrahim Mosque and Harding's Battery gun platform all sit on an open headland with Morocco's Rif mountains 14km across the Strait.
The territory's big British supermarket, VAT-free and cheaper than Spain for cheese, crisps and beer. A full picnic — bread, ham, fruit, two litres of water — lands around £8, and there's a bakery counter and cafe inside.
A converted 19th-century coffee warehouse off Main Street serving Gibraltar's best-value hot lunch: soup-and-salad-bar deals and generous jacket potatoes well under £10, plus free refills of filter coffee on weekday mornings.
A Genoese fishing village turned free public beach on the Rock's east side, with lifeguards in summer, showers and a sand strip beneath a sheer 400m cliff. Bus 4 from Market Place gets you there for the flat £2.20 single fare.
The former parade ground fills with outdoor tables at dusk. The Lord Nelson and Gibraltar Arms pour pints around £4.50 — roughly a third under London prices thanks to Gibraltar's duty-free status — with live music most weekends at no cover charge.
A 1.5km staircase of over 300 hand-cut steps climbing the Rock's sheer east face to O'Hara's Battery at 419m. It's inside the paid Nature Reserve (£19 adult), but it turns that one ticket into a full day and makes the £19 cable car redundant.
Free-entry gardens laid out in 1816 by Governor George Don, with dragon trees, Mediterranean succulents, shaded walks and old cannons. Open daily from 08:00 to sunset, with a small wildlife park charging separately if you want it.
Fourteenth-century Moorish baths sit preserved in the basement alongside a Neanderthal exhibition built on the Gorham's Cave finds. Entry is £5 adult, the cheapest indoor attraction on the Rock, and open 09:00-18:00 Monday to Saturday.
The road to Spain crosses an active airport runway — barriers drop, sirens sound and a jet lands metres away. Walking across is free, takes ten minutes, and puts you at the La Línea border for cheap Spanish tapas.