3D print Mainz Cathedral
A free, printable model of Mainz Cathedral, with its octagonal crossing tower and cone-roofed towers and the dense old-town buildings around it, generated from real map data in your browser.
Free, in your browser. Exports a slicer-ready 3MF.
About Mainz Cathedral
Mainz Cathedral, also known as St. Martin's Cathedral or the Mainzer Dom, stands near the historical center and the pedestrianized market square of Mainz, Germany. This Roman Catholic cathedral, some 1000 years old, is the seat of the Bishop of Mainz. Its style is mostly Romanesque, though additions over many centuries brought in other architectural influences. It has three aisles. Saint Martin of Tours is its patron, and its eastern quire carries a dedication to Saint Stephen.
Archbishop Willigis, who held office from 975 to 1011 and served as regent of the empire from 991 to 994, ordered a new cathedral in 975–976 in the pre-Romanesque Ottonian style, in keeping with his idea of Mainz as a "second Rome". It had a double chancel with two transepts and six towers, and no vault, because of structural difficulties tied to its size. A fire broke out on the day the cathedral was inaugurated in 1009, and the main portions of the building were complete by 1036.
Fire struck again in 1081, and in 1100 Henry IV ordered a reconstruction in the old Lombardic style that gave the east end a large apse. He died in 1106, and the remaining work was abandoned. The central nave reaches a height of 28 m (92 ft), which is 5 m (16 ft) below the 33 m (108 ft) of Speyer Cathedral, and around 1200 a ribbed vault replaced the ceiling. It ranks as a Kaiserdom, or Emperor's Cathedral, one of three in the Holy Roman (German) Empire together with Worms Cathedral and Speyer Cathedral.
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 | 23 mm | 1:3,750 |
| 200 mm | 29 mm | 1:3,000 |
| 256 mm | 37 mm | 1:2,344 |
-
North
-
East
-
South
-
West
- Pointed cone-roofed towers
- The tall conical tower roofs and slim stair turrets end in fine points. Print slowly with good cooling, and use Print friendly to adapt them to the print scale or Full detail on a larger print.
- Crowded crossing tower
- The octagonal tower is packed with narrow windows and small tiers. Layers of 0.12–0.16 mm keep that detail crisp, and a bigger print size gives it more room.
- One piece with the ground
- Mainz Cathedral is joined to the ground in the exported file, and the four-side check found no floating parts, so nothing needs gluing.
- 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. Mainz Cathedral 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
Mainz Cathedral 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 Mainz Cathedral 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. Mainz Cathedral grows with the print: about 23 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.





