  We consider three related topics: (a) Holographic quantum field theories on
AdS spaces. (b) Holographic interfaces of flat space QFTs. (c) Wormholes
connecting generically different QFTs. We investigate in a concrete example how
the related classical solutions explore the space of QFTs and we construct the
general solutions that interpolate between the same or different CFTs with
arbitrary couplings. The solution space contains many exotic RG flow solutions
that realize unusual asymptotics, as boundaries of different regions in the
space of solutions. We find phenomena like "walking" flows and the generation
of extra boundaries via "flow fragmentation".
