Borders of the Nuclear World --- 100 Years After Discovery of Polonium

Hundred years after the birth of nuclear physics almost 3000 bound nuclides are known. Most of them have been produced in nuclear laboratories. With help of new experimental tools, like beams of relativistic heavy ions and projectile fragment separators, still new territories on the chart of nuclei are being conquered. A few examples of experiments which have recently shifted the limits of known nuclei will be presented.