Dug out a sphere and split the top half with glass to use as an Acquarium for my Axolotls and Sea Turtles. The bottom half is a 'natural' grotto for my Tropical Fish, Frogs and Nautilus. Other than the sphere shape, didn't really start with a plan, the pool ending at bedrock was a nice surprise, did a little glass floor to show it off. The lovely terracotta cieling pattern is from Treppee.
by philodoxos