OpenStreetMap (OSM) is a powerful platform for accessing geospatial data and navigating through maps. While the default view in OSM provides a 2D representation of the world, users can also access a 3D mode for a more immersive mapping experience. Here's how to view 3D in OpenStreetMap.

1. Navigate to a 3D-supported area: Not all locations in OpenStreetMap support 3D viewing. To check if a specific area has 3D data available, look for areas with detailed building outlines and landmarks. Major cities and urban areas are more likely to have 3D data.

2. Enable 3D mode: Once you've found a suitable location, you can enable 3D mode by clicking on the '3D' button or selecting the 3D view option from the map's settings menu. This will switch the map to a 3D perspective, allowing you to view buildings and terrain in a more realistic manner.

3. Explore the 3D environment: In 3D mode, you can use the navigation controls to pan, zoom, and tilt the map to view the area from different angles. You can also click on individual buildings or landmarks to access additional information, such as building height, name, or usage.

4. Utilize 3D for navigation and visualization: 3D mode in OpenStreetMap is not only visually appealing but also useful for navigation and visualization. You can use the 3D view to plan routes, assess topography, and gain a better understanding of the spatial relationships between different features.

5. Contribute 3D data: If you notice inaccuracies or missing 3D data in OpenStreetMap, you can contribute by adding or editing building outlines, heights, and other relevant information. This helps improve the overall quality of 3D representations in OSM.

Overall, accessing the 3D mode in OpenStreetMap can enhance your mapping experience and provide a more detailed understanding of geographical features. Whether you're exploring a new city or planning a navigation route, 3D mode offers a valuable perspective on the world around you.