This book presents an iconographic inventory of the urban art scene in San Juan, Puerto Rico, focusing on paintings, graffiti, murals, and street art. Compiled by Alberto Rigau, it documents a contemporary, anonymous, and ephemeral creative phenomenon. The work serves as a visual record and analysis of the transient artistic expressions found within the city's urban landscape.

The book is a specialized visual archive of San Juan's street art, likely appealing to art historians, urban studies researchers, and enthusiasts of graffiti and muralism. Its focus on ephemeral works suggests a value in its documentation of a transient cultural landscape. The compilation by Alberto Rigau indicates a scholarly or curatorial approach to cataloging these urban expressions. The work provides a snapshot of a specific time and place within the broader context of global street art.