This is the Batman collection of Somchai Nitimongkolchai. It's the largest in Thailand, and Nitimongkolchai thinks it might be the biggest in the world.
Ten years ago, he began collecting Batman toys after seeing Batman Begins. According to Coconuts Bangkok, he liked that Batman, unlike Spider-Man, doesn't have any super powers.
Now, his collection is housed at his BatCat Museum, which is also filled with all sorts of stuff. But the man focus is Batman.
He has some super rare items, like this playset:
Picture: Coconuts Bangkok
Nitimongkolchai's collection has been featured several times on Thai TV. Below, via the BatCat's Facebook page, you can see inside his museum and get a look at the memorabilia he's amassed.
Pictures: BatCat's Facebook page