
Image note
Three original interpretations of harbour walls & coastal defence, informed by La Fortaleza and San Juan National Historic Site in Puerto Rico. These images explore material and spatial ideas; they are not documentary views or measured reconstructions of the reference. The palette is drawn from the material portrait.
Publication credit: The Chromologium.
Image credits and reuseThe colour strip is the entry’s study palette. Artwork sources and image credits and reuse terms are recorded in the archive.
Artwork recordThree views of one material idea.
La Fortaleza and the San Juan fortifications form a defensive ensemble adapted to the harbour. Successive building campaigns changed the relationship between the city, its walls and the sea.
Read the material study01 / Reading the material
The city’s edge meets the horizon
San Juan’s defensive ensemble can be read from both sides of its walls. One side belongs to streets and occupied spaces; the other addresses a broad water horizon. The same opening therefore mediates very different scales of view.

02 / From surface to space
Read the whole.
Then the edge.
Follow a wall from the urban interior toward its seaward edge. Thickness becomes especially legible at a cut or threshold, where near material frames distant space. Successive construction campaigns add another layer to this relationship.
Follow a wall from the street to the water-facing edge. Compare a defensive opening with the much wider horizon beyond it.
03 / Colour in context
A palette you can work with.
Five tones drawn from the material portrait. Select a colour, compare it on paper and ink, or copy its value into your own study.
Surface
#4c3e2c
Colour values & paper / ink comparison
oklch(0.374 0.035 73.418) · primary
The colour stays fixed as its surroundings change.
Try the bench exercise
04 / At the bench
Make the observation tangible.
Compose a thick wall with one restrained opening toward a large, quiet background plane. Compare the near frame with the far horizon. Keep historical phases distinct rather than smoothing the ensemble into one imagined moment.
Keep a view of the whole beside a close detail. Note the material, lighting and the one variable you changed.

Source & orientation
Keep the reference close.
UNESCO World Heritage Centre. (n.d.). La Fortaleza and San Juan National Historic Site in Puerto Rico. Retrieved October 10, 2026.
The material readings and bench exercise are editorial studies of this particular reference. The artwork explores its material ideas; the linked source documents the place.
Artwork & cartographic records
Artwork record · Geographic plate record. Map geometry: Natural Earth, public domain. The archive follows its map’s place names, including territories and disputed areas.
A closer look
Questions about this study
What does this study of Puerto Rico focus on?
La Fortaleza and the San Juan fortifications form a defensive ensemble adapted to the harbour. Successive building campaigns changed the relationship between the city, its walls and the sea.
Where can I find the original reference?
La Fortaleza and San Juan National Historic Site in Puerto Rico, published by UNESCO World Heritage Centre. The artwork explores the reference’s material ideas; the linked source documents the place.
What could I try at the bench?
Compose a thick wall with one restrained opening toward a large, quiet background plane. Compare the near frame with the far horizon. Keep historical phases distinct rather than smoothing the ensemble into one imagined moment.



