Many locales have been painstakingly rebuilt in Minecraft, but this recreation of The Shire from Lord of the Rings is pretty breathtaking. According to this Imgur page, which collects some choice images from the map, the project involves 25 builders and is a 1:58 scale recreation of the Hobbit stomping ground.
According to the Imgur page, the map measures "around 3500x2500" blocks. It helps that one of the map builders is a professional geologist, as the team is aiming to "adhere to geological and botanical realism". That this is even possible in Minecraft is a testament to the brilliance of the game. It's easy to forget, sometimes.
Here are some choice images, but check out the rest here.