Oslo, Norway!
Within 24hrs there is Wrecks in Åland, Mines i Finland and Sweden, Caves i Norway, Wrecks all along the coast of Norway. The only cold water corals within recreational diving depths in the world (AFAIK). Caves in France. Within Norway: Wrecks in the Oslofjord, Kristiansand, Mandal, Bergen, Gulen, Ålesund, Bremanger, Trondheimsfjord, Mo i Rana and Narvik.
(seriously... who likes sweating in the sun anyways...)
Within 24hrs there is Wrecks in Åland, Mines i Finland and Sweden, Caves i Norway, Wrecks all along the coast of Norway. The only cold water corals within recreational diving depths in the world (AFAIK). Caves in France. Within Norway: Wrecks in the Oslofjord, Kristiansand, Mandal, Bergen, Gulen, Ålesund, Bremanger, Trondheimsfjord, Mo i Rana and Narvik.
(seriously... who likes sweating in the sun anyways...)