noun
all over the country; throughout the land
Emphatic expression meaning every corner of the country; often used in formal or literary contexts.
この商品は全国津々浦々で販売されています。
This product is sold all over the country.
全国津々浦々から観光客が集まった。
Tourists gathered from every corner of the country.
全国各地 is a more common, neutral way to say 'all over the country', while 全国津々浦々 is more emphatic and literary.
Combination of 全国 (nationwide) and 津々浦々 (every nook and cranny). 津々浦々 itself is a reduplicative compound of 津 (port) and 浦 (bay), meaning every port and bay, i.e., every corner of the land.