Perched on the 34th floor, it is India’s highest open-air bar. Patrons are treated to tapas and mezze against a backdrop that encapsulates the evolution of this fascinating metropolis, from old mills to soaring skyscrapers. Climatic conditions have been considered; a canopy shelters the space in monsoon season and champagne flutes carry tiny weights to stop the wind carrying them away. Yet on a still, balmy evening, there is no better place to view a Mumbai sunset, especially given the fact the Aer offers a half price happy hour until 8pm.