Nusa Penida

Nusa Penida needs 2 days: the Kelingking Beach viewpoint, shaped like a T-Rex and one of Indonesia's most photographed landscapes, and Broken Beach and Angel's Billabong on one, and snorkeling or diving with manta rays at Manta Point, on the other. April-October brings the calmest seas for boat excursions from Bali. It's inexpensive, though boat transport and scooter tours on unpaved roads add to the budget. Just 30 minutes by fast boat from Bali, it remained practically undeveloped until the mid-2010s, when a flood of Kelingking Beach photos on social media turned it into one of the most popular day-trip destinations in all of Southeast Asia.