Ask any property developer where the best spot in a skyscraper is, and the answer is usually the top. Normally that is where the highest rents are charged, so the top floors go to offices or restaurants. The creators of Roppongi Hills chose differently. Their concept was simple and bold: place culture, meaning art, above the economy, meaning the offices. The idea belonged to Minoru Mori, the president of Mori Building, who died in 2012. He wanted to turn Roppongi into a cultural city center, and he wanted a symbol of that ambition at the very top of the tower. In the museum's own founding message, the cultural city center was described as the most important concept of Roppongi Hills from the moment it was imagined, as a new model of urban redevelopment. There is a wider story here too. Before this museum opened, museums inside office buildings in Japan were rare, mostly limited to the Idemitsu Museum of Arts in Tokyo and to museums inside department stores. The opening of the Mori Art Museum in October 2003 helped make the idea of a museum inside a building feel natural. When you ride the elevator up, you are following a path that this museum helped open.