This developer built a city visualizing sectors of the S&P 500 using Massive. This is insane. Everything from the lights, the weather, to the heights of the buildings come from live market data. Here is how to read it: Buildings: Each tower is one of the 18 largest S&P 500 stocks in its GICS sector. Height follows the square root of market cap. Windows: Lit windows show how the stock is doing today. A dark tower is down, a fully lit one is up. Tower: The large tower in the open plaza is SPY, the whole market. Its crown glows with SPY's move, and the LED bands scroll up or down with it. Weather: The sky drifts from dusk at the open to night at the close. It warms when SPY is up and goes cold when SPY is down. Traffic: More cars appear relative to SPY volume against its 20-day minute average. Fireworks: Launch when a stock crosses another +5%, a sector another +2.5%, or SPY another +2%. Music: Tempo is traffic, hi-hats and swing are volatility, the key is SPY direction, the bass filter opens with the size of SPY's move, and the arpeggio steps through the 11 sectors. Check out the demo here: robertcreative.com/city Build something Massive.