OpenStreetMap (OSM) is a popular platform for accessing and contributing to open-source mapping data. While OSM is known for its detailed and accurate 2D maps, it also offers the option to view the world in 3D, allowing users to explore buildings and terrain with a more immersive experience.

To view 3D in OpenStreetMap, follow these simple steps:

1. Enable 3D View: In order to access the 3D view feature in OpenStreetMap, you'll need to use a compatible web browser or a specialized 3D-enabled map viewer. You can enable the 3D view by selecting the appropriate option in the map settings or by using a shortcut key if available.

2. Navigate to an Area of Interest: Once the 3D view is enabled, navigate to an area of interest on the map. You can use the search bar to find a specific location or simply pan and zoom the map to explore different areas.

3. Explore 3D Buildings: In urban areas and developed regions, OpenStreetMap has detailed 3D models of buildings. As you zoom in closer to the map, the buildings will start to appear in 3D, giving you a sense of the architectural layout and design of the area.

4. View Terrain in 3D: In addition to 3D buildings, OpenStreetMap also offers terrain visualization in 3D. You can explore hills, mountains, and valleys with a more realistic representation of the landscape, allowing for a better understanding of the geographical features of a location.

5. Customize your Experience: OpenStreetMap allows users to customize their 3D view experience by adjusting the angle, tilt, and rotation of the map. This customization can provide a more personalized and engaging perspective of the 3D environment.

By following these steps, you can easily access and view 3D buildings and terrain in OpenStreetMap for a more immersive and interactive mapping experience. Whether you're exploring a cityscape or studying geographical features, the 3D view in OSM offers a unique way to interact with the mapped world.