In the last few decades, natural soundscapes have been increasingly seen as constituting a kind of natural heritage – particularly in Asia, Europe, and North America. The fast rate of urban sprawl and ensuing acoustic contamination has brought about a concern, among citizens and governments, regarding the conservation of sonic environments facing the drastic modification or even extinction. In the last decade, the soundscapes of Valdivia and its surrounding has been monitored within the scope of environmental acoustics and patrimonial research. Unfortunately, however, very few recordings of the city and wetland soundscapes have been made and made available. This project builds from previous research carried out by academics from both Acoustics Institute and the Architecture and Urbanism Institute at Universidad Austral, exploring the relationship between current wetland soundscapes and the urban development using start-of-the-art recording techniques and sound-lapses.