  When placed upside down a liquid surface is known to destabilize above a
certain size. However, vertical shaking can have a dynamical stabilizing
effect. These oscillations can also make air bubbles sink in the liquid when
created below a given depth. Here, we use these effects to levitate large
volumes of liquid above an air layer. The loaded air layer acts as a
spring-mass oscillator which resonantly amplifies the shaking amplitude of the
bath. We achieve stabilization of half a liter of liquid with up to 20 cm
width. We further show that the dynamic stabilization creates a symmetric
Archimedes' principle on the lower interface as if gravity was inverted. Hence,
immersed bodies can float upside down under the levitated liquid.
