Arnis
Arnis is a browser-based generator for turning real places into Minecraft worlds. Its product page describes free generation without signup and offers both Java and Bedrock output formats. The described workflow uses real-world map data; the page does not explain an AI model or promise a photorealistic reconstruction.
Select a place and the right world format
Start by choosing an area on the map. Arnis lists three generation modes: objects with terrain, objects only or terrain only. Select the combination that fits the world you want to explore, rather than adding every detail at once. The interface also lets you set an optional spawn point on the map.
Java Edition output is a ZIP world folder for PC, Mac or Linux. Bedrock output is an mcworld file, with the page listing mobile devices and consoles among its intended platforms. Confirm how your device imports a world before generating a large area. Format support does not remove the platform's own file-import requirements.
Add detail only where the map supports it
Roof generation adds simple roofs when building footprints are available. The 3D-building option uses available building data, while land cover adds vegetation and land-use detail. Interiors are described as optional and supported only in some places. These settings depend on the underlying data, so a real address does not guarantee a complete model of its buildings.
Arnis recommends a safer first attempt with terrain and roofs enabled and heavier options disabled. Try a manageable area before increasing the detail or coverage. That gives you a way to distinguish an import problem from a generation setting that your chosen place does not support.
Inspect the generated world before extending it
Download and import the appropriate format, then check the spawn location and a few recognizable features. Treat the result as a Minecraft interpretation of map data, not a survey of the real site. You may need to adjust buildings or paths for the experience you want.
The homepage does not list measured generation times, accuracy benchmarks or commercial-license terms. Check those terms before redistributing a world, and keep your own copy if you intend to build on it. The free interface is useful for trying a location, but it does not establish that every region or optional detail will generate successfully.