[1][2][3] The park is of great value because it includes two former water tanks going back to the 19th century, as well as architectonic elements, and uncommon flora and fauna.

[4][5] Soroborda and Buskando, two ancient and very well conserved deposits of water of the 19th century are situated inside the park.

[6] The existence of these deposits was practically unknown in San Sebastián when in 2006 they were to be demolished to build luxury houses, but a report of Aranzadi association put in relief his architectural value and as an important element in the city's cultural heritage.

In its monthly organised sessions in the park by Seo/BirdLife of Donostia the members of this association have observed up to 32 bird species.

Most of them are not autochthonous, they came from abroad countries, brought like curiosity by the gardeners commissioned of the Municipal Nurseries.