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These are among Europe’s most important cactus gardens. They are particularly impressive as the sun sets, when surreal and shapes and shadows emerge.

These wild gardens offer splendid vistas and hundreds of examples of typical Mediterranean vegetation.

The best time to visit these wonderfully elegant gardens is in spring when the plants are in blossom and the colours and aromas are in full force.

Cannons among the rose bushes, and pathways along the walls of a flower-filled moat, are the highlights of these gardens, which ring the castle.

Reminiscent of the Hanging Gardens of Babylon, this gracious oasis surrounding the Greek amphitheatre is officially known as La Rosadela.

Opposite the Miramar, with its telescopes and viewing spots, these gardens are scattered with stairways leading to enchanting leafy groves with vistas.

This multi-level park hides a small Modernista house, by Puig i Cadafalch, and the Font del Gat – a drinking fountain, which has inspired many local songs.

An avenue lined with sculptures by Frederic Marès and Ernest Maragall is the main delight here. The garden also has the last of the city’s ginjoler trees.

A multitude of secret paths leads through wild gardens on Montjuïc’s south side, the only part of the mountain that remains untamed.

A viewing area with small gardens nearby, this is the only place in the city where you can see the plains of the Llobregat stretching below.