Nanogap junctions consist of two electrically conducting tips separated by a nanometric gap (nanogap). A tunnelling current can be detected in sub-3nm nanogaps. They enable a variety of applications, including biomolecular detection, molecular electronics, nano-photonics and plasmonics. In this Master Thesis project a new approach to fabricate nanogap junctions is developed. The process exploits the electromigration of gold ligaments formed through the crack-defined break-junctions (CDBJs) methodology. The nanometric cross-section of the gold ligaments allow adopting a simple electromigration process, which does not require feedback loops. In addition, ligaments are suspended, thus avoiding the common issue of debris generation in the vicinity of the gap during electromigration.