Landsat data are collected over much of the land mass of the planet. That global coverage allows scientists, educators, and resource managers to observe and study areas normally out of range of traditional cameras.
A good example is the Solovetsky Island chain.
The six islands of the Solovetsky Islands archipelago are located in the western part of the White Sea in northwestern Russia, less than 100 miles from the Arctic Circle. The largest is Greater Solovetsky Island, on which a famous medieval monastery stands. The seascape's beauty and the islands' remote location appealed to two Russian Orthodox monks who founded a monastery there in the 15th century. The sea is frozen most of the year, limiting the navigation season to three months over the summer.