L'ou com balla is a Corpus Christi custom in Barcelona: an emptied egg spins and bounces on the jet of a fountain decorated with flowers and cherries. The best known is the Sant Jordi fountain, in the cathedral cloister, but it can be seen in some twenty courtyards, gardens and museums. In 2027, Corpus Christi Thursday is 27 May.
For a few days in late May or June, in the cloister of Barcelona Cathedral, an empty egg spins and bounces on the jet of a fountain covered in flowers and cherries. It's called l'ou com balla, “how the egg dances”, and from the cloister it has spread to courtyards, gardens and museums all over the city. Nobody knows for certain how it began. For anyone living here in spring, it's the perfect excuse to step into courtyards that hardly anyone ever looks at.
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What exactly it is
It's a Corpus Christi custom: an emptied egg is placed on the spout of a fountain decorated with flowers, and the water keeps it in the air, spinning and bouncing. According to Fem Turisme, the egg is emptied beforehand and its small hole is sealed with wax so that it holds up. The fountains are decorated with flowers and seasonal fruit, especially cherries, and with broom and carnations.
At the cathedral, the fountain is the Sant Jordi fountain, in the cloister, which is adorned with garlands of flowers and a basket of cherries. The Gran Enciclopèdia Catalana says the custom has spread to many other places in Catalonia, from Igualada to Sitges, Lleida or Tarragona.
1637, or earlier
The City Council repeats one date: since 1637 the egg has set the Corpus festival apart, and Time Out gives it as the most widely accepted. But there are earlier traces. Fem Turisme records purchases of eggs for the celebration in the cathedral cloister as early as 1636, and some authors point to precedents around 1440, without firm proof. The Gran Enciclopèdia Catalana speaks of signs in the 15th and 17th centuries, says it seems to have been a game of the cathedral's choirboys and that it has been traditional since the 19th century.
The procession is older still: according to betevé, Barcelona's is documented from 1320, and in 2021 the cathedral published a book, L'Ou com balla. L'Efímer, el Corpus i la Catedral, to celebrate 700 years since the first documented procession.
What it means
There's no single answer, and the sources say so. The religious reading sees the Host in the egg and the chalice in the water, with the cherries as the blood of Christ. Another sees life, fertility and rebirth; another, a soul rising towards God. There are also those who explain it as a simple medieval pastime. Which one carries more weight depends, as Time Out puts it, on whom you ask.
The drought and the polystyrene egg
In 2023 and 2024 the drought forced the festival to adapt. According to VilaWeb, in 2024, for the second year running, where the water could be reused the amount was reduced, and elsewhere dry fountains were decorated with flowers or a polystyrene egg was made to dance on air. That year the cathedral unveiled a greener decoration, of branches and yellow flowers, and for the first time carpets of plants with red and white flowers inside the fountain enclosure.
Where and when to see it
Corpus Christi falls sixty days after Easter Sunday, so its date changes every year. In 2026 it ran from 4 to 7 June: the cathedral held the traditional blessing on Wednesday the 3rd at 6:30 pm, and Time Out counted some twenty venues, among them the cathedral cloister, the Casa de l'Ardiaca, the Museu Frederic Marès, the Ateneu Barcelonès, the Palau del Lloctinent, the Palau de la Virreina, the Seminari Conciliar and the Monestir de Pedralbes, each with its own opening hours. On Sunday the 7th, the Corpus procession set off at 7:45 pm from the Avinguda de la Catedral, and as it passed, flower carpets such as the one at Santa Maria del Pi were undone.
In 2027, Corpus Christi Thursday is 27 May. A lovely way to experience it if you're in the city those days: start first thing at the cathedral cloister and carry on to the Casa de l'Ardiaca, the Museu Marès and the Palau del Lloctinent, watching how each fountain plays the same game in its own way. Opening times change every year and it's worth checking them on the day.
Checked
Data checked in October 2026 against: Gran Enciclopèdia Catalana (L'ou com balla), Catedral de Barcelona, Ajuntament de Barcelona (Barcelona Cultura, 2019), Fem Turisme (June 2026), Time Out (2018 and May 2026), betevé (Corpus 2026), VilaWeb (May 2024), ACI Prensa (May 2026) and a calendar of Corpus 2027 dates (calendardate.com).
Quick questions
How long has l'ou com balla been held?
The City Council gives 1637, the most widely accepted date, although there are purchases of eggs for the celebration in the cathedral cloister as early as 1636 and some authors point to precedents around 1440, without firm proof.
Where can you see l'ou com balla in Barcelona?
In 2026 there were some twenty venues, among them the cathedral cloister, the Casa de l'Ardiaca, the Museu Frederic Marès, the Ateneu Barcelonès, the Palau del Lloctinent and the Monestir de Pedralbes, each with its own opening hours.
Why does its date change every year?
Because Corpus Christi falls sixty days after Easter Sunday. In 2026 it ran from 4 to 7 June; opening times change every year and it's worth checking them on the day.