The school boasts excellent facilities both on campus and off. Beautiful old buildings combine with state-of-the-art modern facilities. The main Tower Block, designed by R A Lawson, has long been regarded as one of the finest pieces of Victorian architecture in Dunedin.
The charm of attractive heritage buildings is complemented by the modern facilities in the main teaching areas. Fully-equipped physics, chemistry and biology laboratories, computer and language suites, music rooms and a recording studio are all part of a great learning environment. A free-standing library has kept pace with all developments in research and information technology. A drama room, technology workshops, and an E.S.O.L suite provide learning opportunities for boys at all levels and of all abilities.
Despite its location in the middle of the city, Otago Boys' High School is able to offer excellent sporting facilities for the large numbers of boys who are involved in a wide range of activities. On-campus facilities include a gymnasium and weight-training complex, a heated indoor pool, eight cricket nets and a similar number of tennis courts. A short distance away. teams and players make full use of the school's rowing complex, Balmacewen golf course, and the new Caledonian athletics complex, as well as enjoying immediate access to the neighbouring Moana Pool swimming and fitness centre.
Perhaps the 'jewel in the Otago Boys' High School crown' is its ownership of a magnificent Lodge set in the heart of the Mount Aspiring National Park. Kayaking, abseiling and tramping are some of the outdoor skills covered while geography and biology are subject areas which benefit from field trips to the Lodge. At other times of the year, junior classes spend a week at Aspiring learning outdoor and social skills, while a leadership camp for seniors is always a highlight at the end of each year.