The article uncovers the hidden layers of the Teatro Colón in Buenos Aires, with a particular focus on a significant underground area that extends beneath its plaza and sidewalks to Avenida 9 de Julio. This typically unnoticed space constitutes about one-third of the grand theater, emphasizing the architectural depth and historical significance of the venue.

One intriguing feature highlighted is a palo borracho tree whose roots extend down to 15 meters in an internal courtyard on the theater's third subfloor. Despite its appearance above ground as just another shrub, this tree symbolizes the rich ecosystem that flourishes in these underground passages, which are not generally visible to the public. The juxtap of navigating the bustling city above while having such a unique natural element hidden from view adds a layer of mystery to the urban experience.

As many pedestrians and vehicles pass by unaware, the article raises awareness about the existence of this "hidden city" beneath one of Argentina's most famous cultural institutions. The connection between the Colón's celebrated cultural offerings, such as opera, classical music, and ballet, with its lesser-known underground features provides a broader appreciation for Buenos Aires’ architectural heritage, linking history with daily life in the city.