This island in the Andaman chain is home to the Sentinelese tribe. Outsiders are strictly forbidden as the tribe remains isolated from the modern world.
North Sentinel Island, India
Photo Credit: Flickr
Formed by a volcanic eruption, Surtsey is one of the world’s youngest islands. It is only open to scientists to study nature without human interference.
Surtsey Island, Iceland
Photo Credit: Flickr
One of Japan’s most sacred shrines, rebuilt every 20 years to preserve Shinto traditions. Only royal family members can enter its inner halls.
Ise Grand Shrine, Japan
Photo Credit: Flickr
Once a quarantine hospital and later a rehab centre, this abandoned New York island is now a bird sanctuary and is permanently closed to visitors.
North Brother Island, USA
Photo Credit: X/@__theSeyram
Home to thousands of deadly snakes, this island is so dangerous that the Brazilian government bans visitors to protect both people and the ecosystem.
Snake Island, Brazil
Photo Credit: X/@Miss__Emerald
Area 51, a secret US military base, is off-limits and linked to alien conspiracy theories.