Most visitors to El Salvador head straight for the surf breaks and black-sand beaches. Two hours east of the capital, at 1,200 metres up in the Usulután hills, lies a completely different side of the country: Alegría, a cool little mountain town wrapped in coffee plantations and flower nurseries, with a bright green volcanic lagoon at its doorstep.

The town's calling card is Laguna de Alegría, sitting in the crater of Tecapa Volcano. Locals call it the Emerald of America thanks to its unusual greenish water, a colour that comes from the sulfur-rich, geothermal environment around it. It's a stunning spot for photos and walking the crater rim, but one firm rule applies: don't swim. Despite local legends about healing properties, the water is highly acidic.

Back in town, Alegría moves at a gentler pace than the lowlands. The central park, traditional houses and the Catholic church anchor a compact historic centre that's easy to cover on foot. The town was founded as Tecapa and renamed in 1891 in honour of José Miguel Alegría, a priest and educator. It's also the birthplace of Alberto Masferrer, the influential writer and social thinker born in 1868, whose ideas about education and social justice still colour the town's identity.

Coffee runs deep here. High altitude, volcanic soil and cool air make the surrounding slopes ideal for beans considered among the best in El Salvador. Flower nurseries are the other local trade — growers welcome visitors, and buying plants or blooms directly from them supports small family businesses. Add in misty viewpoints over forested hills and valleys, and you have plenty to fill a day or two without ever rushing.

Getting there takes some planning. Alegría sits roughly 120 kilometres east of San Salvador in the Tecapa-Chinameca mountain range. Drivers usually come via the Pan-American Highway, turning off toward Berlín, or approach from the south through Santiago de María. Public transport exists but connections require checking schedules and road conditions in advance.

For hikers, the trails around Tecapa reward with volcanic scenery and plantation views, but conditions and access can shift — especially in the rainy season — so it's worth arranging local guidance before setting out on unfamiliar routes.

Alegría suits travellers who've had their fill of beaches and want small-town El Salvador: cool weather, farm-to-cup coffee, a dose of literary history and one of the country's most distinctive natural sights. Visit in the dry season for reliable weather and clear views; come in the wet months for impossibly green hills, packing for afternoon showers and slippery paths. Either way, it's a rewarding detour on any eastern El Salvador itinerary.