Vienna is very imposing.
Our first tourist destination was the Vivarium. I think the building was originally an old water tower or something, but inside was something far more interesting than one usually finds inside those.
Animals!
Fishes
A large part of the vivarium was given over to an impressive aquarium.
Manta Rays.
A turtle swims upwards.
A blurry alligator.
Terrapins.
Iguanas.
The remainder of the vivarium was devoted to a tropical environment.
Unexpected blockage in the path.
Monkeys!