 Victoria University of Wellington and the University of Auckland train future architects.Many of the more imposing structures in and around Dunedin and Christchurch were built in the latter part of the 19th century as a result of the economic boom following the Central Otago Gold Rush.A common style for these landmarks is the use of dark basalt blocks and facings of cream-coloured Oamaru stone, a form of limestone mined at Weston in North Otago.