Visit Rabaul

Historic jungle trail across the ranges.

Snorkel over WWII bulldozers and trucks the US Army dumped into the sea.

Japanese guns on the island's high point.

The highest tides on Earth, best watched among the Hopewell Rocks flowerpot stacks.

Mineral springs that have petrified into white waterfalls of stone above the Oaxaca valleys, with cliff-edge pools you can swim in.

Drift between the American and Eurasian tectonic plates in gin-clear glacial water.

Drift by boat beneath a cave ceiling lit by thousands of glowworms.

Wind-carved chalk mushrooms and icebergs of rock glowing at sunset — camp overnight under the Sahara stars.