The Land of Oz has sat decaying since 1980, nestled at the top of a mountain in North Carolina.
Accidental 'calligraffiti' writer Soemone looks back to the roots of letters and tags for his inspiration.
Radouan Zeghidour is an urban explorer leaving his mark on underground Paris.
Urban explorer Substormflow takes you "draining" inside the city's brick and concrete tunnels.
A mini documentary delves into the world of NYC urban explorers.