In historical records the village was first mentioned in 1567. Before the establishment of independent
Czechoslovakia in 1918, Kolonica was part of
Zemplén County within the
Kingdom of Hungary. In 1939, it was for a short time part of the
Slovak Republic. From 1939 to 1944, as a result of the
Slovak–Hungarian War of 1939, it was again part of
Hungary. In 1944, the
Red Army entered Kolonica and it was once again part of Czechoslovakia. ==Observatory==