The subject of the study is the lyrical cycle “The sea” by A. A. Fet. The object of the analysis is the chronotope. The goal is to reveal the specifics of the space-time picture of the world in the aspect of one of its thematic components - the theme of the night. The author analyzes the techniques that create an artistic and spatial picture of the world - parts of speech, figures of speech (parallelism), artistic means of expressiveness (epithets). The study draws attention to the color palette of seascapes, their dynamics. It is established that Fet animates the sea, likens the inner world of man to the sea element. That is why the theme of the sea is often combined with the theme of love in his poems. The article emphasizes that, unlike its predecessors, A. A. Fet unites several poems dedicated to the theme of the sea, in the lyrical cycle – a kind of artistic unity. The poet is a connecting link between the poetry of romantics and symbolists. Despite the concreteness of time and space in the lyrical cycle of the poems “The Sea”, the chronotope expands due to the use of mythological images. In addition, the distinctive feature of the artistic picture of the poet's world is that the chronotope is psychological. The artistic world of A. A. Fet accommodates both aesthetic contemplation, and memories, and nightly sad insights, and a sense of unity with the natural world.