Lavish koi fish cafes are all the rage in Vietnam right now, but this is the only one we're aware of in Phnom Penh. It's bound to catch on. The idea of chilling on an island surrounded by colorful koi fish that you can feed is sure to go over big with your little ones.

Set in a large indoor space with high ceilings and glitzy decor, walkways lead to booths with floors set below the water line in a pond teeming with Japanese koi fish. As people sip coffee and eat food, hundreds of koi flock tableside in hopes of getting a snack.

Give your kids a squirt bottle of fish food and they can lean over the side of the booth and feed the schools of colorful koi that thrust their gaping mouths above the water's surface whenever they see movement above.

And if your kids tire of watching the fish, let them dive into the ball pit out front.