Monty Don visits the world's 80 most inspiring gardens. This epic garden adventure starts when Monty travels to two very different but neighbouring countries. Mexico is one of the most plant-rich and artistic cultures on the planet, from the ancient water gardens of Mexico City, to the modernist extremes of Luis Barragan and a surrealist fantasy hidden in the rainforest. Travelling to the Caribbean island of Cuba, Monty discovers that the crumbling colonial grandeur of its urban landscape is now host to a very green revolution.