L’Ou com Balla is one of Barcelona’s most distinctive Corpus Christi traditions. Each year, fountains in historic courtyards and cloisters are adorned with flowers to host this ritual. Simple yet enchanting: an egg floats and spins atop the fountain’s jet of water, gracefully defying the laws of physics. A symbol of fertility and renewal, it has remained unchanged since its origins, balancing between the playful and the sacred.