Here's a cool little number: a map of the entire Great Sea in The Wind Waker, recreated with Lego bricks! This masterpiece was shared by reddit user BrucilSprout, who didn't physically assemble this creation, but instead used Lego Digital Designer to bring his idea to fruition.
This is a pretty beefy creation — you can even pull apart the individual grid squares and reconnect them in any order you so desire. But if you wanted to put this together yourself, you would need to gather 1885 pieces. You probably don't have all the necessary bricks, so you would have to order them individually, which can be quite expensive.
BrucilSprout's next project is the overworld from Ocarina of Time — here's what Zora's River looks like so far.