Every year in the "Holy Week", the time from Palm Sunday to Easter Sunday, most cities and villages in Guatemala celebrate local processions in which different religious groups carry life-sized, heavy and holy statues through the streets. Antigua is the Guatemalan hotspot and epicenter of these activities. If it happens you are in Antigua during the Holy Week don't miss to watch these processions. Usually there are several a day, organized by different groups or churches on different tracks throughout the streets and during different times of the day. Ask the local tourist information to find the procession that fits best into your plans.;
Also visit the churches of Antigua in that time, as every church is proudly decorated and displaying beautiful handmade "carpets". These carpets, made of colorized sawdust, show and form religious symbols and get decorated with fruits and vegetables and is something that Antigua is particularly famous for. Also you find such handmade carpets on the streets as a grounding for the processions to walk over it.;
Be aware that prices are rising high during the Holy Week as this is a touristic highlight well-known throughout all Guatemala. Hence, the city is crowded by natives and internationals alike. However, in the week or the two weeks before already there are a lot of processions who "practice" their walk, so it may be advisable to move there in the days before when prices have not yet skyrocketed.
Catedral de San José
The second church to occupy this site and one of the largest in Central America during its heyday, the Catedral de Antigua Guatemala was built in 1680 to replace its antecessor that dated to 1541. While most of the building was leveled during the earthquake of 1773, the ornate Baroque facade emerged relatively unscathed. While a partial reconstruction beginning in the 19th century has allowed the building to once again be home to a functioning church, other portions of the complex remain in ruins.
The useful lifespan of the Colegio de San Jerónimo was short indeed: the sixteen years between its completion in 1757 and the earthquake of 1773 that destroyed it saw the building used first as a secondary school staffed by the Friars of La Merced, then as a royal customs house. Today, though it's quite a bit further afield from the other colonial ruins, San Jerónimo is popular with visitors for the beautifully landscaped gardens in its courtyard, centered on a lovely fountain and playing host frequently to dance performances, festivals, and other cultural events. As for the building itself, you can tour through the crumbling ruins of the old dormitories with their handsome vaulted ceilings, then head to the upper level for a great view of Volcán Agua in the distance.
Formally known as the Convento e Iglesia de Nuestra Señora del Pilar de Zaragoza (Convent and Church of Our Lady of the Pillar of Zaragoza), this partially reconstructed building (which is also home to the offices of the National Council for the Protection of Antigua Guatemala) was, from 1736 to the devastating earthquake of 1773, home to a community of cloistered nuns. Today, visitors can explore the ruined remains of the former nuns' dormitories, amble through the desolate tranquility of the convent's still-thriving gardens, and take in a panoramic view of the city from the rooftop terrace.
One of the largest complexes of colonial ruins in Antigua, the Convento de Santa Clara was built in 1715 as the home of an order of Franciscan nuns founded some years earlier by a group of six sisters from Mexico. Today this ruin is most notable for its facade, which largely survived the earthquake of 1773 that devastated the complex; it's one of the most ornate in all of Antigua, replete with intricate statuary and ornamentation in molded stucco. Interestingly, the facade is located in the rear of the complex: in front is a spacious, well-tended courtyard garden not too different from the one at Colegio de San Jerónimo, ringed by the ruined remains of the former cloisters. Ascend to the upper level for a nice view over the surrounding mountains.
This grand old church is one of the most visited of Antigua's ruins, thanks to its status as final resting place of Hermano Pedro de San José Betancurt: a 17th-century monk who is the first Catholic saint to hail from Guatemala, and was renowned as the "St. Francis of Assisi of the Americas" due to his ascetic lifestyle, charitable generosity, and aid to marginalized groups within colonial Guatemalan society. A multi-domed structure in the Spanish Baroque style, San Francisco el Grande is a classic example of colonial-era architecture. It was partially reconstructed after the earthquake of 1773 and is still an operating church, but there's also a small museum onsite dedicated to Hermano Pedro and the history of the church.
Built in 1708 as a church and monastery for friars from the Order of the Recollects, La Recolección sustained heavy damage in the earthquakes of 1717 and 1753 before meeting its final destruction in the massive Santa Marta Earthquake of 1773 that claimed most of the rest of the city along with it. Today it's among the largest ruins in Antigua, but it's also far off the well-trodden circuit (hidden away past the bus station at the west end of town) and not particularly well-preserved either: damage to La Recolección continued even after the quake, when much of the remaining material was plundered for other construction projects and structurally stable portions of the complex were altered for use as a soap factory, a horse stable, and other purposes. Still, visitors can take advantage of the quiet tranquility and lack of crowds to enjoy a peaceful walk through the garden. As for the ruins themselves, the former church building is the best-preserved portion of the complex; the cloisters, former infirmary building, and other remains less so.