When you reach the level of 74. you are able to start building your Oak Door in your Dungeon. The doors need 10 oak planks and OSRS gold will bring about 200K xp/hour. This is a quick way to reach the level 99 mark and is extremely cost-effective however, if you're trying to reach that level quickly and have no money to spare it is possible to begin building mahogany tables within your dining...