Take a look at Lebron James new mini CASTLE...in MIAMI!!!...He doing it BIG!!

We knew that LeBron was gonna do it BIG in Miami, but who knew he was gonna do it $50 MILLION BIG!!

LeBron is reportedly in contract to buy the house photo'd here. This is how the realtor describes it:

One-of-A-Kind breathtaking 8BD/11BA open bay waterfront estate situated on the finest lot in gated exclusive Gables Estates!This 20,088 SF grandeur home has 800 ft on water & sits on 3.6 acres w/100 ft dock to accommodate 150ft yacht.

Private Guest Suite w/lighted tennis ct & courtyard on its own acre.3 Suites w/full baths,Upstairs Master Suite w/full Gym,Billiard and Media room are just a few of the delights.Luitron lighting & 12 camera security system thru-out this estate!