Atsuta Shrine (熱田神宮, Atsuta Jingū) is one of Shinto's most important shrines. It enshrines the Sun Goddess Amaterasu and stores the sacred sword Kusanagi, which is one of the three imperial regalia. Note, however, that the sword is never displayed to the public.
By Meitetsu Railways
Take the Meitetsu Nagoya Line from Nagoya Station to Jingumae Station (5 minutes, 230 yen), from where the shrine can be reached in a three minute walk.
Jingunishi Station on the Subway Meijo Line is a five minute walk from the shrine.
By Japan Railways (JR)
Take the JR Tokaido Line from Nagoya Station to Atsuta Station (6 minutes, 190 yen), from where it is a ten minute walk to the shrine.