All of these tanks are done by members (or mostly, #1, #3, are done as "Journals on) www.aquaticplantcentral.com . The one with the "waterfall" was created using falling sand that actually falls, and gets blown back up to create a never ending water/sandfall. The neat thing is the one with the "tree" (ie, driftwood and Java Moss) was created by someone with little to no planted tank experience. =P
Also, it's not the Top 27 Tanks In The World. I think the actual title in the magazine was "Top 27 Nature Aquariums In The World".