Historic Airports are buildings in Second Life of special historic interest. Many sites listed as historic go back to the early days of Second Life following its launch on June 23, 2003. In many cases such historic sites have continued to be developed since their inception and may barely resemble their original appearance. However, in some cases buildings themselves may be preserved in part and up-kept as historic monuments. Most historic airports are located on Sansara, the oldest continent in Second Life.