World will not load

One specific minecraft world I have spent most my time on will not load.

What happened:

Was last in End City, closed out, got back on about 2 hours later, loading bar would get to the end then freeze. Tips would continue to change but the world would not load after the longest times.

What I have tried: 

Restarting my computer, restarting the game, even reinstalling the game. Nothing has worked.