Yohnus

Yohnus owns the blacksmith in Shilo Village which is, unfortunately, always closed. Inside of his blacksmith contains the closest furnace to a bank in all of RuneScape, which can only be accessed by paying 20 coins. You must repay this fee each time you enter the blacksmith, which is one of the downsides to this furnace despite being incredibly close to a bank.

A common glitch is if you are too far away from the door while attempting to pay Yohnus to enter the furnace, it will simply close the dialogue box and do nothing instead of subtracting the gold and letting you inside. This can be avoided by attempting to open the door instead of directly talking to Yohnus.