When working on architectural designs in Revit, it's essential to ensure that all the necessary elements are clearly visible in the 3D view. One important aspect of this is making sure that the levels in your project are visible in the 3D view. Here's how you can easily achieve this in Revit:

1. Open the 3D view that you want to work on.

2. Navigate to the 'Visibility/Graphics Overrides' menu.

3. In the dialog box that appears, go to the 'Model Categories' tab.

4. Look for the 'Display' column and find the 'Levels' category.

5. Check the box next to 'Levels' to make them visible in the 3D view.

6. You can also customize the color and line weight of the displayed levels to ensure better visibility.

By following these simple steps, you can make sure that the levels in your Revit project are clearly visible in the 3D view, allowing for better visualization and understanding of your architectural designs. This can be especially useful when presenting your designs to clients or stakeholders, as it provides a more comprehensive view of the project. By taking advantage of the features in Revit, you can easily enhance the overall visual quality of your architectural designs.