Why is "Church frescos in Sweden" trending?

Wikipedia Overview

Church murals or church wall paintings are mostly medieval paintings found in several Swedish churches. They usually adorn the vaults or walls of the buildings. In Swedish they are sometimes referred to as kalkmålningar, literally "lime paintings", since they were often painted using lime as the binding medium for the paint. The earliest church murals in Sweden date from the first decades of the 12th century and are Romanesque in style. The majority of these are found in the southern part of Sweden, where they were commissioned by members of the royalty and nobility of the time. They all have certain iconographic similarities, and for the most part, show stylistic influences from contemporary art in what is now Germany. While it is assumed that the artists who painted the murals were well-educated, and the first of them foreigners, virtually nothing is known about their identities. Around 1250, there was a stylistic shift towards Gothic that saw lighter and more airy compositions and the rising popularity of Marian and Christian mystic motifs. Early and High Gothic murals are preserved, especially on the island of Gotland, where many new churches were built at the time, and in Scania, where many older churches were equipped with new vaults which were then decorated. The earliest known names of the artists date from this time.