Three days is short for Costa Rica, but it is enough to taste both of the country’s great faces: the cultured, coffee-built capital and the steaming volcano country around La Fortuna. The secret is to keep moving sensibly, book the timed activities ahead and accept that you will leave things out. This plan assumes you land in San José, spend one day in the capital and the Central Valley, and then travel to Arenal for two days of adventure.
Day 1: San José and the Central Valley
Start the morning at the National Theatre, the gilded 1897 opera house on Plaza de la Cultura, on a guided visit, then cross the plaza to the Pre-Columbian Gold Museum beneath it, where jaguars, frogs and shamans cast in gold glow in darkened galleries. Walk down the pedestrian Avenida Central to the Central Market for lunch at one of its sodas, the small local restaurants serving casados and gallo pinto. If you would rather taste your way through the centre, a guided walking food tour covers the market and more. In the afternoon, if you still have energy, ride out to a coffee estate on the slopes of Poás, such as Hacienda Doka, to see how the bean that built the theatre goes from bush to cup. Sleep in the capital so you can leave early.
Getting to La Fortuna
The drive is about three hours, longer in rain or traffic. A rental car gives you freedom around Arenal, a shared shuttle with hotel pickup is the easiest low-effort option, and a private transfer suits families. Leave San José early, since the mountain road is winding and fog can make late driving tiring. Check in, drop your bags and head straight out if the weather is clear, because the volcano is often visible only in the morning.
Day 2: the volcano and the water
Start early with a guided hike on the old lava flows at the foot of Arenal Volcano, where a naturalist helps you find toucans, monkeys and sloths and tells the story of the 1968 eruption. If you prefer to walk alone, the Arenal 1968 Trail Park offers self-guided trails over the same lava. After lunch, visit the La Fortuna Waterfall, a seventy-metre plunge into a cool pool, and be ready for the climb of about five hundred steps back to the top. In the evening, soak in the hot springs, either at a famous complex such as Tabacón or in the pools of your hotel. This is the classic Arenal day, and it works because the mornings are for walking and the evenings are for soaking.
Day 3: canopy, wildlife or adventure
Choose one main activity for the morning. The Mistico Arenal Hanging Bridges take you through the canopy on a self-guided loop, and the bridges are good for all ages. Sky Adventures combines an aerial tram with ziplines, for travellers who want thrills. A Peñas Blancas safari float offers a calm, wildlife-rich alternative. If you have a flexible evening, a rainforest night walk shows the frogs and insects that come out after dark. Then head back to San José or onward to the airport, leaving enough time for traffic.
What to book ahead
Book hotels first, especially for the dry season and holidays. Reserve the waterfall, the hanging bridges and any guided hike for the specific morning you want. Hot-spring day passes at famous resorts can have strict cancellation rules, so confirm your date before paying. If you plan to drive, check that your rental includes insurance that is valid in Costa Rica.
What to skip with only three days
Skip a long day trip to Monteverde, which deserves its own night, and avoid squeezing in a second volcano. If you want more of the capital, trade the coffee estate for an evening at the theatre. If you want more of Arenal, add an extra night and use it for the Río Celeste day trip, which is a long but memorable day.
Packing and practicalities
Take closed shoes with good grip, a light rain jacket, a swimsuit, quick-dry clothes, insect repellent and sun protection. US dollars are widely accepted, but carry a few colones for small purchases. Keep valuables secure in the city, and use taxis or ride-hailing cars in the evening. Mornings are the best time for views and wildlife; afternoons are for waterfalls, hot springs and rain.
