3D print El Morro
A free, printable model of El Morro and the rocky headland, sea and grassy ground around it in San Juan, generated from real map data in your browser.
Free, in your browser. Exports a slicer-ready 3MF.
About El Morro
Known as El Morro, or the promontory, Castillo San Felipe del Morro is a sizable fortress and citadel in San Juan, Puerto Rico's capital, within the historic quarter called Old San Juan. Its six levels crown a steep rocky headland on San Juan Islet, where they guard the entrance to San Juan Bay, which serves as the harbor for Old San Juan. It rises 43 meters (140 ft) from the Atlantic shoreline. UNESCO named it a World Heritage Site in 1983. Its name honors King Philip II of Spain.
King Charles I of Spain commissioned the fortress in 1539. By 1595 it had grown, under Philip II, into a bastioned fort with a hornwork. The final plans were drawn in 1587 by Juan de Tejeda, a field marshal, and Bautista Antonelli, an Italian engineer-architect. The new fortifications included a hornwork across the headland: two half-bastions, Tejeda and Austria, were joined by a curtain wall with a moat before it and a drawbridge at its center. Over the next 200 years, especially under King Charles III, work continued until the fort reached its present form in 1787.
El Cañuelo, San Cristóbal, La Fortaleza and other forts in the Walls of Old San Juan joined El Morro in protecting Puerto Rico, known as the Key to the Indies, against invasion by rival world powers. In 1595 Sir Francis Drake attacked San Juan with his fleet and failed. El Morro also resisted a Dutch siege in 1625. Its last active fight was a bombardment from the sea by the US Navy in the 1898 Spanish–American War.
How it prints
Make this print opens the generator on a 600 m square around the landmark. Buildings print at close to true scale, so the landmark grows with the print size.
| Print size | Landmark height | Scale |
|---|---|---|
| 160 mm default | 12 mm | 1:3,750 |
| 200 mm | 15 mm | 1:3,000 |
| 256 mm | 19 mm | 1:2,344 |
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North
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East
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South
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West
- Tiny sentry turrets
- Small turrets sit at the corners and edges of the walls. Print friendly adapts them to the print scale, while Full detail keeps each one, which suits a larger print or a fine nozzle.
- Notched parapets and a slim lighthouse
- Rows of small blocks line the wall tops, and a slim lighthouse rises from the terrace. Layers of 0.12 to 0.16 mm and a slower print speed help these small parts stay crisp.
- Pick the detail for your nozzle
- In the Buildings settings, set Landmark detail to Print friendly to adapt thin parts and small details to the print scale. Full detail keeps every modeled feature, for larger prints or a finer nozzle.
- Colors
- Buildings, roads, water and ground arrive as separate filament slots in the 3MF. El Morro takes the building color.
- File format
- You get a 3MF for Bambu Studio, OrcaSlicer or PrusaSlicer. Any of them can save it as STL if you need one.
About this model
El Morro is one of more than 2,300 landmark models in Mini Skyline. They are made with AI, and each one is checked from four sides in its real surroundings before release. Everything around it is built from OpenStreetMap and Overture map data. If you would rather print the shape from map data, turn off Landmark models in the Buildings settings.
Common questions
Is there an El Morro STL I can download?
Mini Skyline builds the file for you in your browser and exports 3MF, which every major slicer opens. If you need an STL, open the 3MF in your slicer and export it from there.
How big can I print it?
Any print size from 40 mm across. El Morro grows with the print: about 12 mm tall on the default 160 mm print. For a model larger than your printer bed, Project Mode splits the area into tiles.
Is it free?
Yes. Generation runs in your browser, with no account and nothing behind a paywall.
