Borobudur

A paved ridge path between two river valleys on the edge of town, best walked at sunrise before the heat.

Steep terraced rice fields north of Ubud irrigated by the traditional subak system, with paths dropping into the valley between them.

A temple complex in old forest at the edge of Ubud, home to several hundred long-tailed macaques and three Hindu temples.

The walled palace of the still-reigning sultan, with open pavilions, court gamelan performances and a museum of royal possessions.

The eighteenth-century royal bathing complex behind the palace, with pools, an underground mosque and tunnels through the old garden.

Bromo is an active cone inside the much larger Tengger caldera in east Java, surrounded by a flat sea of volcanic sand. The standard visit is a pre-dawn jeep ride to a viewpoint on the caldera rim, then a walk and stair climb to the smoking crater. Nights at 2,000 metres are genuinely cold, which surprises most first-time visitors.