If you think of the US Mint as the largest manufacturer of coins, the Royal Canadian Mint may be the largest manufacturer of non-circulating legal tender (NCLT) coins. Sure, the RCM does mint circulating coinage for Canada, but a visit to their website will introduce you to a comprehensive catalog of NCLT coins commemorating everything Canadian or international themes that affect Canada.
The RCM uses a different process than the US Mint to strike NCLT coins. The US system is more automated than the RCM uses. A friend sent a link to the following video about the minting process at the RCM from the Discovery Channel. I thought it was worth sharing. Enjoy!