Cartago is a city in Costa Rica, about 25 km east of the capital, San José. It is at an elevation of about 1435 m above sea level, at the base of the Irazú Volcano. Many pilgrims come to Cartago annually, to visit the nation’s principal church, the enormous Basílica de Nuestra Señora de los Ángeles, on the feast day of the Virgin of the Angels (August 2). The church has a statue of a Black Madonna known as La Negrita, who supposedly had great healing powers. The sick come to her statue in hope of a miracle from La Negrita.
Besides the Basilica of Los Angeles, dont forget to visit also the “Ruins of Santiago Apostle Church”, The City Museum, Maria Auxiliadora church, the Central Market (especially on Thursdays and Saturdays), you may also do some excursions to the tropical rainforests along the mountain ranges near the Irazu and Turrialba volcanoes and/or drive up to the Irazu Volcao. See also at Cool2visit.com this article: Visiting Cartago and the Irazú Volcano in Costa Rica.
Here we attach some images from a trip to Cartago back in 2012: