From ancient Buddhist temples to active volcanoes ... a diverse range of tourist attractions. Some of the top attractions include Borobudur in Java, Mt Bromo, Lake Toba in Sumatra, Kawah Ijen ...

As far as volcano tourism ... island of Sumatra, Mount Marapi, killed 23 hikers and injured dozens more when it unexpectedly spewed superheated ash. So, is volcano tourism safe?