3D print the Colosseum
A free, printable model of the Colosseum and the streets, parks and buildings around it in central Rome, generated from real map data in your browser.
Free, in your browser. Exports a slicer-ready 3MF.
About the Colosseum
The Colosseum, an elliptical amphitheater, sits just east of the Roman Forum in central Rome, Italy. It is the largest ancient amphitheater ever built and the largest one still standing anywhere. Work started under the Emperor Vespasian in 72, and his successor Titus saw it finished in AD 80. Further modifications followed under Domitian. Together the three emperors are called the Flavian dynasty, which is why later classicists and archaeologists named the building the Flavian Amphitheater.
The structure combines travertine, Roman concrete and tuff, a volcanic rock. By estimate, it held between 50,000 and 80,000 spectators at different points in its history, and audiences averaged some 65,000. The program ranged from gladiatorial contests and animal hunts to executions, dramas based on Roman mythology and re-enactments of famous battles. The site had held an artificial lake created by Nero, which was filled in, and the land was reused as the location of the new building.
Entertainment at the Colosseum ended in the early medieval era. Later uses included housing, workshops, a fortress, a quarry, a Christian shrine and quarters for a religious order. Earthquakes and stone robbers left it substantially ruined, yet it remains a renowned emblem of Imperial Rome. It was also named among the New 7 Wonders, and the Italian 5 euro cent coin shows its image.
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 | 13 mm | 1:3,750 |
| 200 mm | 16 mm | 1:3,000 |
| 256 mm | 21 mm | 1:2,344 |
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North
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East
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South
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West
- Rows of small arches
- The oval wall is a stack of arcades. A larger print keeps the arch openings clear; at small sizes Print friendly adapts them to your nozzle, while Full detail keeps every arch.
- Cut-away wall and tiers
- Part of the outer wall is missing, leaving thin arched edges beside the seating tiers inside. Layers of 0.12 to 0.16 mm keep those edges crisp, and slower printing helps the taller sections.
- 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. The Colosseum 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
The Colosseum 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 a Colosseum 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. The Colosseum grows with the print: about 13 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.
