KnockturnMC

play.knockturnmc.com

Knockturn is a community of people who came together to build the world of Harry Potter.  The server currently features Hogwarts, DiagonAlley, Knockturn Alley, Parts of London, Kings Cross, and Hogsmeade Station. 

The server has it's own customized plugins.  It features it's own spells plugin that lets your Harry Potter experience come to life by giving you the ability to cast spells and features wand movements and backfires!  A potions plugin that lets you do Harry Potter potions with immense skill.  A broom plugin that allows you to fly. A plugin that allows you to speak with Mr. Ollivander to find just the right wand for you!  A plugin that lets you go to class, and raise your hand, and gives our professors full control of the class! Want to level up? Almost everything you do in the server gives experience, which can be checked with /profile!  Once you are at 100%, boom, you can be the next year!
These are just some of the plugins that exist.