6 islands on Earth you can never visit – one is in India

These days, it feels like almost every place on Earth has been mapped, tagged, and turned into content. With travel hacks, endless reels, and influencer itineraries flooding our feeds, you'd think there's nowhere you can’t go. But a few islands around the world are still completely off-limits– not because they’re far, but because people just aren’t allowed there.

Some are sealed off to protect fragile environments. Others have dark pasts or dangers that keep visitors out. A few are simply private and have stayed that way for generations. No permits, no tourist passes, and no guided tours– just strict lines that you can’t cross.

Here are six islands that remain out of reach– places you’ll likely only ever see in pictures. Note: The images used in this article are generated by Canva AI and are for representative purposes only.

North Sentinel Island lies in the Andaman Sea, India, surrounded by turquoise waters. It may look peaceful from a distance, but the Sentinelese people fiercely protect their home and have lived in isolation for over 60,000 years. Indian law bans anyone from coming within five nautical miles to protect their way of life and prevent the spread of disease.

Just across from the popular Hawaiian island of Kauai is Niihau– a place locals call “The Forbidden Island.” You can spot it from the coast, but that’s about as close as you’ll get.

Privately owned since the 1860s, Niihau remains off-limits to outsiders to preserve its native Hawaiian language and traditions. There’s no tourism, no modern infrastructure, and no entry unless you're family or personally invited by the owners, and chances are, that invitation’s not coming anytime soon.

Right in the middle of Venice’s quiet lagoon lies an island with a heavy past. Poveglia was once used to isolate plague victims and later became the site of a psychiatric hospital.

Today, the island remains officially closed, not just because of the eerie legends that shroud it, but due to safety concerns. With crumbling buildings and unstable structures, it poses serious risks. Italian authorities have sealed it off, and any exploration is strictly prohibited.

You’d have to go far– really far, to even see this place. Heard Island sits between Antarctica and Australia, surrounded by freezing seas and brutal winds.

It’s home to glaciers, an active volcano, and some of the most untouched wildlife in the region. To keep it that way, Australia doesn’t allow public access. Only a few government-approved scientists are allowed to go, and even they face tough conditions with no shelter, no transport, and no backup.

Locally known as Snake Island, this place is famous for one thing: snakes. And not just any– it’s the only place where the golden lancehead viper lives, one of the deadliest snakes in the world.

With so many snakes packed into one small island, the Brazilian Navy banned visitors for safety reasons. Only a handful of researchers– under tight controls– are ever allowed to step foot there. Even they don’t stick around for long.

Tucked into the East River between the Bronx and Rikers Island, North Brother is strangely hidden in plain sight.

In the past, it was used as a quarantine zone and later a rehab centre. But after years of being abandoned, the city declared it off-limits. Crumbling buildings and protected bird species make it too risky– and too important– to open up again. Even though it’s just minutes from Manhattan, it’s completely out of reach.