The Meaning of Life, the Universe, and Everything.
It isn't Herobrine's Mansion, it's Herobrine's Return. Very well done of the explosions, zombies, invisible blocks fireworks, boss creativity, good use of MCEdit. Truly the master of very realistic adventure maps. Hypixel serves as the greatest inspiration for those looking for creating command block adventures.
AntVenom and his team did a good job making a song. Lots of hard work they put in.