About the location
Please be aware that the Eiffel Tower at night is protected by Copyright Tour Eiffel - Illuminations Pierre Bideau. You may use those photos for yourself, but not in a commercial context. I am not sure which size of the Eiffel Tower is relevant for this copyright, because if it's only seen in your photos as props you may be fine, even at night. Please make sure to check these things for yourself before using night photos from Paris!
