World's most dangerous tourist attractions

Miyakejima Island, Japan

Miyakejima sits above a chain of volcanoes in the Pacific Ocean and in the past 100 years the volcanoes have erupted six times. As a result, huge clouds of ash and toxic sulphur dioxide filled the air, making a large proportion of the land uninhabitable. The island was evacuated and remained empty for five years but in 2005 people began to return. Now nearly a third of the island is off-limits thanks to the poisonous gases and residents and visitors must wear gas masks to protect themselves against the toxic air.