Vishna-Tarn is the capital city of Tarn-Vedra. Very little is known about it except that it is the birthplace and childhood home of the famous Dylan Hunt, and that he kept the memories of it very dear, because he and his family had a very good life on the planet. The actual planet of Tarn-Vedra was tesseracted away from normal spacetime into a completely different area of space separate from regular dimensions. However, the Vedrans did create 9 copies of Tarn-Vedra, all of which were identical copies of each other named Seefra 1 through 9. On those worlds, the elements of nature and time had had their way with the city, and by the time the Andromeda Ascendant and her crew managed to arrive in the city to see the ruins and remnants of the city.