A system for providing proximity awareness to an anatomical feature while navigating an ablation tool inside a patient's chest, the system comprising: an electromagnetic navigation system including: an electromagnetic field generator, an ablation tool configured to be inserted into the patient's chest, and an electromagnetic sensor disposed on the ablation tool; and a computing device including a processor and a memory storing instructions which, when executed by the processor, cause the computing device to: receive image data of the patient's chest; generate a three-dimensional model of the patient's chest based on the received image data; determine a location of the anatomical feature based on the received image data and the generated 3D model; track a position of the electromagnetic sensor; iteratively determine a position of the ablation tool inside the patient's chest based on the tracked position of the electromagnetic sensor; provide instructions to indicate a proximity of the ablation tool relative to the anatomical feature, based on the determined position of the ablation tool inside the patient's chest; characterised in that the instructions further cause the computing device to: determine an ablation zone based on ablation settings for the ablation tool; determine whether the ablation zone is approaching a predetermined distance from the anatomical feature; and provide an alert when a determination is made that the ablation zone is approaching the predetermined distance from the anatomical feature. an electromagnetic navigation system including: an electromagnetic field generator, an ablation tool configured to be inserted into the patient's chest, and an electromagnetic sensor disposed on the ablation tool; and an electromagnetic field generator, an ablation tool configured to be inserted into the patient's chest, and an electromagnetic sensor disposed on the ablation tool; and a computing device including a processor and a memory storing instructions which, when executed by the processor, cause the computing device to: receive image data of the patient's chest; generate a three-dimensional model of the patient's chest based on the received image data; determine a location of the anatomical feature based on the received image data and the generated 3D model; track a position of the electromagnetic sensor; iteratively determine a position of the ablation tool inside the patient's chest based on the tracked position of the electromagnetic sensor; provide instructions to indicate a proximity of the ablation tool relative to the anatomical feature, based on the determined position of the ablation tool inside the patient's chest; receive image data of the patient's chest; generate a three-dimensional model of the patient's chest based on the received image data; determine a location of the anatomical feature based on the received image data and the generated 3D model; track a position of the electromagnetic sensor; iteratively determine a position of the ablation tool inside the patient's chest based on the tracked position of the electromagnetic sensor; provide instructions to indicate a proximity of the ablation tool relative to the anatomical feature, based on the determined position of the ablation tool inside the patient's chest; characterised in that the instructions further cause the computing device to: determine an ablation zone based on ablation settings for the ablation tool; determine whether the ablation zone is approaching a predetermined distance from the anatomical feature; and provide an alert when a determination is made that the ablation zone is approaching the predetermined distance from the anatomical feature. determine an ablation zone based on ablation settings for the ablation tool; determine whether the ablation zone is approaching a predetermined distance from the anatomical feature; and provide an alert when a determination is made that the ablation zone is approaching the predetermined distance from the anatomical feature.