Summary and outlook

In 2003, a series of Very Large Volume Neutrino Telescope Workshops (VLVnT) was initiated in Amsterdam, the Netherlands. The 5th workshop in this series took place in Erlangen, Germany, between 12–14 October 2011 and focused on the aspects of high-energy neutrino astronomy. In this summary report, an overview of the activities world-wide is presented as well as the perspectives of the field.