San José's barrios each have a distinct personality, and walking between them is one of the city's genuinely free pleasures. Barrio Amón and Barrio Otoya, just north of the commercial center, hold the densest concentration of heritage architecture — coffee-baron mansions with tile roofs and wrought-iron railings, many now repurposed as galleries or small hotels. The streets are quieter than downtown and the sidewalks wider. Head east and you'll reach Barrio Escalante, which has transformed over the past ten years into a food and art district without losing its residential feel. The murals here are worth the walk alone. South of the center, Barrio Chino — San José's small Chinatown along Calle 9 — has a decorative gate and a handful of blocks with bilingual signage and a different visual texture from the rest of the city. It's compact, maybe fifteen minutes of walking, but the shift in atmosphere is noticeable. San Pedro, anchored by the UCR campus, has a younger and scruffier energy: secondhand bookshops, cheap student restaurants, political posters on every telephone pole. Each of these neighborhoods is free to walk, and the transitions between them tell you something about how the city layers its history.

Here's a realistic shape for a zero-budget day in San José. Start early — the city wakes up before you will — and head to Mercado Central around 7:30, when the stalls are fresh and the morning rush hasn't peaked. Walk the aisles slowly. The coffee roasters are working by then, and the scent fills the corridors between the fruit vendors and the soda counters. From there, walk east along Avenida Central's pedestrian stretch toward Plaza de la Cultura. Take a few minutes at the plaza to watch the pigeon dynamics and the street performers setting up. Continue north on foot into Barrio Amón — the walk takes about ten minutes and the noise drops sharply once you cross into the residential streets. Loop through Morazán, stop at the Templo de la Música, then continue into Barrio Otoya and down to the MADC for whatever exhibition is up. That's your morning, and you haven't spent anything. Afternoons are good for Parque La Sabana — it's big enough that you can walk for an hour without retracing your steps — or for the bus out to San Pedro to wander the UCR campus. Sunday mornings open up the Museo de Arte Costarricense for free, which pairs naturally with a La Sabana visit.

A few things worth knowing before you set out. San José's sidewalks are notoriously uneven — broken tiles, sudden drops, exposed drainage — so wear shoes you can trust, not sandals. The city's elevation means mornings can be surprisingly cool, especially in the green season from May through November. A light layer is worth carrying. Rainy season brings afternoon downpours that are heavy but usually short; ducking into the Mercado Central or a covered bus stop is the standard local response. Water fountains are rare in public spaces, so carrying a bottle is wise even though it costs something to fill. Public bathrooms at major parks and museums exist but vary in condition. The city center is walkable but hilly in places — the grid looks flat on a map but the terrain disagrees. Bus fare within San José is cheap enough that it barely registers as an expense, but if you're being strict about zero colones, the central neighborhoods are all reachable on foot within about 40 minutes of each other. Safety-wise, the same common sense that applies to any Latin American capital applies here: watch your belongings in crowded areas, stay aware in quieter streets after dark, and keep your phone in a front pocket on busy Avenida Central.