I posted an earlier picture of Dumper's (Whites Tree Frog) home, but since removed the PVC pipes for a more natural look.
Dumper's 20gal high tank was built from 2 standard 10gal tanks stacked on top of each other with the glass removed. This allows for two distint areas he can move freely through. The bottom half contains a partial false bottom, homemade rain curtain and a small pond. This is the cooler wet area. The top half contains mossy ledges on both sides and lots of vines and fake plants to climb and hide.
The other tank (also 20gal modular) was built by my gf for the green tree frogs and contains a homemade bridge, waterwall and lots of vines, plants and a ledge on the second level (not shown as it's still a WIP). They got the upgrade last night and have been very noisy since. I think it's because of the running water and one of them climbed into it and decided he was going to "quack" for 5 minutes straight. it was cute at first...
Jade, our new new female Whites Tree Frog is currently only in a 10gal

but it's 3 times the size she was in at the pet store and has lots of hiding spaces and perching areas. When the two are able to be united, I will be adding this tank to Dumpers creating a 30 gallon modular with some type of side opening panel.