The Atomium is a landmark building in Brussels, Belgium, and one of the most popular tourist attractions in the city. It was built in 1958 for the Brussels World Expo and was designed by the engineer André Waterkeyn and architects André and Jean Polak. The building is 102 meters tall and consists of nine interconnected spheres, representing an iron crystal magnified 165 billion times.

The Atomium was originally intended to be a temporary structure, but due to its popularity, it was preserved as a permanent monument. Today, the Atomium houses a museum and exhibition center, where visitors can learn about the history and future of science, technology, and innovation. The building also features a restaurant with panoramic views of Brussels, and the top sphere offers an observation deck with views of the surrounding area.

The Atomium has become an iconic symbol of Brussels and Belgium, and it is considered one of the most important examples of mid-century modern architecture. It has been featured in numerous films, television shows, and music videos, and it remains a popular destination for tourists from around the world.