Parallelepiped is the name given to a polyhedron with six faces, all of which are parallelograms. In architecture it is rare to see parallelepipeds whith angles that are not right angles. But here is an example, sitting in Victoria Park, disguising a more boring box. The structure is part of the fire and rescue facilities at the Victoria Park Tunnel.
(And the bone dry lawns are witness to the drought that brings us endless fine weather, together with big problems for agriculture.)