Of course, there are many structural modifications that can be made to a building, depending on what you want to achieve and the current state of the building. Here are some common possible modifications: 1. **Spatial Reorganization**: Reconfigure the interior walls to optimize the spatial layout and increase flexibility of use. 2. **Add Floors**: If the building's structure allows, one or two floors can be added to increase the usable area. 3. **Strengthen the structure**: Improve the seismic performance and overall stability of the building by strengthening its structural components (such as beams and columns). 4. **Appearance Renovation**: Update the building's facade to make it more modern or meet new aesthetic requirements. 5. **Increase Natural Light**: Add larger windows or skylights to improve indoor lighting and natural ventilation. 6. **Energy-Saving Renovation**: Use better insulation materials, install energy-saving windows and solar panels to improve the energy efficiency of the building. 7. **Create Open Space**: Remove some interior walls to create open living or working spaces to increase the openness and interactivity of the space. 8. **Add Green Elements**: Add green plants (such as vertical greening, roof gardens) on the roof or walls to improve the ecological environment of the building. 9. **Accessibility**: Consider adding accessible facilities, such as wheelchair ramps, elevators, or automatic doors to improve accessibility. Before making major structural modifications, be sure to consult a qualified building engineer or architect to ensure that the modifications comply with local building regulations and safety standards. In addition, it is also necessary to consider the possible negative impact on the existing structure.