Revit is a powerful tool for architectural design, and its 3D view capabilities allow designers to visualize and present their projects effectively. One important aspect of using Revit is the ability to view different levels in 3D. Here are some tips on how to achieve this in Revit.

1. Open your Revit project and navigate to the 3D view. Once you are in the 3D view, you can see the overall structure of your project.

2. To view different levels in 3D, navigate to the 'View' tab in the ribbon at the top of the interface. Click on the 'User Interface' dropdown and select 'Tile Views'. This will allow you to see multiple views at once, making it easier to compare different levels.

3. Next, navigate to the 'Properties' panel on the left side of the interface. Here, you can select the specific levels you want to view in 3D. You can also use the 'Section Box' tool to focus on a specific portion of your project, making it easier to work on individual levels.

4. If you want to focus on a particular level, you can use the 'Reveal Hidden Elements' tool to make elements on that level more visible in the 3D view. This can help you identify any issues or make necessary adjustments to your design.

5. Another useful technique is to use the 'Filter' tool to isolate specific elements or categories on a particular level. This can be helpful for coordination and clash detection, as well as for creating detailed presentation graphics.

6. When navigating the 3D view, use the 'Walkthrough' tool to move through the model and experience your design as if you were inside it. This can provide valuable insight into the spatial qualities of your project.

By following these tips, you can effectively view different levels in 3D in Revit, allowing you to better understand and present your architectural design. Whether you are working on a small-scale residential project or a large commercial development, mastering 3D views in Revit is essential for creating compelling and accurate architectural designs.