and fauna including colonies of seals and penguins that are the subject of scientific study and monitoring, as well as numerous historical monuments dating from the nineteenth century. This territory has been identified also as an Important Bird Area by BirdLife International because of its breeding colonies of Antarctic terns and kelp gulls. ASPA 149 features diverse plant and animal life, notably penguin and seal colonies including the largest fur seal breeding colony in the Antarctic Peninsula region. No longer hunted, fur seals have successfully re-colonized their original habitats on Livingston Island and elsewhere in the Antarctic Peninsula region. The land boundary of ASPA 126 Byers Peninsula was shifted eastwards to 60º53'45"W in 2016 to include along with Byers Peninsula also all ice-free ground and ice sheet west of Clark Nunatak and Rowe Point, increasing the overall surface area of that protected territory to . Two restricted zones of scientific importance to Antarctic microbiology have been further designated within these boundaries with greater restriction placed on access with the aim of preventing microbial or other contamination by human activity: Ray Promontory in the west, and Ivanov Beach and northwestern Rotch Dome in the east. There are two Historic Sites or Monuments of Antarctica on the island: San Telmo Cairn (HSM 59) at Cape Shirreff, which commemorates the 644 Spaniards lost on board the San Telmo in 1819, and the Lame Dog Hut (HSM 91) at St. Kliment Ohridski base, which is the oldest preserved building on Livingston Island and together with its associated artefacts is considered a part of the cultural and historic heritage of the island and Antarctica. The hut hosts the Livingston Island Museum, a branch of the National Museum of History in Sofia. Tourism Antarctic shipborne tourism was initiated in the 1957/58 season with four cruises operated by Chile and Argentina in the South Shetland Islands. Since then the number of tourists visiting Antarctica has grown to several tens of thousands annually. Over 95% of them tour the South Shetlands and the nearby Antarctic Peninsula. Hannah Point on the south coast of Livingston, Half Moon Island off its east coast, Aitcho Islands just north of Greenwich Island, and Deception Island are among the most popular destinations. Tourists arrive mainly in cruise ships, and are landed by Zodiac rigid inflatable boats to walk along designated trails led by tourist guides and enjoy picturesque scenery and wildlife. Zodiac boats