Southeast Asia has a beach problem. Not a shortage of them — quite the opposite. The problem is that the beautiful ones get discovered, photographed ten million times, and then quietly ruined by the very attention that made them famous. Koh Samui. Phuket. Bali. Beautiful, yes. Quiet and unspoiled, not anymore.

I spent four months traveling slowly through Thailand, Vietnam, Cambodia and the Philippines looking for the other ones. The beaches that do not appear in the top ten lists. The ones you reach by long-tail boat or motorbike or a forty-minute walk down an unmarked path. Here is what I found.

Koh Kradan, Thailand

Most people who visit Thailand have never heard of Koh Kradan. It sits in the Trang region in the south, away from the main tourist islands, and getting there requires a ferry connection that most travelers do not bother with. That is exactly why it is still beautiful.

The water here is the color of shallow Caribbean sea — turquoise over white sand, crystal clear to a depth that makes you feel like you are floating in air. There are a handful of simple bungalow resorts on the island, no 7-Elevens, no beach clubs playing loud music, no jet skis. Just water, sand, coconut trees and silence.

Go before more people figure this out.

Nacpan Beach, Palawan, Philippines

Palawan is already on most travelers’ radar, but almost everyone goes to El Nido or Coron and stops there. Nacpan Beach is about forty minutes north of El Nido by motorbike — a road that is half paved and half beautiful chaos — and it is one of the longest, emptiest beaches I have ever stood on.

Four kilometers of pale sand. Almost no one on it. A few small cottages selling cold drinks and grilled fish. The kind of beach that exists in your imagination of what a beach should be.

Con Dao Islands, Vietnam

The Con Dao archipelago sits off the southern coast of Vietnam and is completely overshadowed by Phu Quoc among tourists. That is changing slowly, but slowly enough that right now it remains genuinely quiet.

The beaches here are backed by national park jungle. Sea turtles nest on the shores between July and September. The diving is exceptional and uncrowded. The history of the island — it was used as a prison during both French colonial rule and the Vietnam War — adds a layer of depth that makes it more than just a beach destination.

Koh Rong Sanloem, Cambodia

Everyone goes to Koh Rong. Fewer people make it to the smaller neighboring island of Koh Rong Sanloem, and those who do tend to stay longer than they planned. The main beach, Saracen Bay, is calm and clear, lined with small guesthouses and hammocks strung between palm trees.

At night, bioluminescent plankton lights up the water. You walk into the sea in the dark and your feet glow blue-green beneath the surface. It is one of those things that sounds made-up until you see it with your own eyes.

A Note on Keeping Places Beautiful

Every time I write about a hidden place I feel a small conflict. The more people who know about it, the less hidden it becomes, and eventually the thing that made it special gets worn away. I would ask anyone reading this to travel gently. Take nothing, leave nothing, spend your money with local people rather than large resorts, and treat these places with the same respect you would want shown to somewhere you love.