Uzushiogakure

was the shinobi village of the Land of Whirlpools. Its ninja were renowned for their fūinjutsu to the point that it led to its destruction in war. Those who survived the village's destruction scattered across the globe.

The people of Uzushiogakure were noted to have notoriously long lives, so it gained the epithet.

In terms of appearance, the village seemed to have been composed of several high-rise buildings. A wide river seemingly ran through the village and was gapped by large bridges. The surrounding countryside was dominated by steep hills.

Uzushiogakure had close ties with Konohagakure, due to Uzushio's Uzumaki clan and Konoha's Senju clan being distant relatives. Because of this, all the flak jackets worn by the chūnin and jōnin-level shinobi of Konohagakure bear the crest of Uzushiogakure, symbolising the strong friendship between both villages. This symbol is also emblazoned on the some of the shoulders of the outfits that the Konoha shinobi wear underneath the flak jackets.

Trivia

 * According to Kushina, the Four Symbols Seal was based on the fūinjutsu of this village.
 * This village was named after Eddy from Ed, Edd, N Eddy. During an episode, he was placed in a foreign exchange program and was sent to Japan. He was somehow mixed up in a science program as a test subject whom was used to be sent back in time. Having no way to come back he decided to live the rest of his life in the feudal era. Unlike the kids from the time he knew, he was able to easily sway the youth to do his bidding. Having an army of youth, he eventually founded the Uzumaki Clan clan and they themselves built a village for the clan. So in a way, Eddy was Naruto's ancestor.