San José & the Central Valley

the 1897 neoclassical opera house on Plaza de la Cultura, the country's proudest single building; guided tour + café

~1,600 gold pieces, 500–1500 AD, subterranean under Plaza de la Cultura beside the Teatro

the world's largest collection of American jade, four floors, superbly laid out. Pair with the Gold Museum on the $33 three-museum pass

the 1880s covered market: sodas, coffee stalls, crafts, the beating retail heart of old San José

six blocks of Calle 33 turned into Costa Rica's best restaurant row: Lebanese, Mediterranean, Latin fusion, craft beer

active crater, dynamic-access timed entry, one of the world's most accessible active volcanoes; classically paired with Doka coffee

the highest volcano in the country, turquoise Diego-de-la-Haya crater lake, both-oceans-on-a-clear-morning, paired with the Basílica de los Ángeles in Cartago. Half-day $45–85, combined $60–95

5 waterfalls, cloud-forest trails, 100+ animal wildlife refuge, ~3.5 km of paved trails; the crowd-pleaser day-park, often stacked with Poás+Doka

Class III–IV rainforest-gorge rafting from the metro; the overnight-lodge version is the premium upsell

colonial Orosi + 800+ orchid species under University of Costa Rica protection; often the third leg of the Irazú day

Costa Rica's oldest continuously operating coffee plantation, 70-hectare farm, ~1.5 hrs from San José, seedling-to-cup with bilingual guides; classic ~$25–35, premium cupping ~$65

the polished, theatrical coffee-education show near Heredia; standard ~$32, barista experience ~$75. The entertainment-first alternative to Doka's authenticity-first

the town that hand-paints the carreta, Costa Rica's national-symbol oxcart; the world's largest oxcart and the artisan workshops. Usually stacked with Poás/Doka/Grecia