Roosevelt Island Gets a Technicolor Swimming Pool; Inside the Secret Subway WiFi Basement

• Minnesota-based artist HOT TEA used 120 gallons of rainbow-colored paint to transform a Roosevelt Island swimming pool. [Colossal]
• Geodesic dome creator Buckminster Fuller had a pretty hefty FBI file. Find out what these documents say. [Gizmodo]
• Go inside the secret basement that powers New York’s wireless subway network. [Fast Co.]
• How the Twin Towers went from “filing cabinets” to American icons that remain symbols of the city even in their absence. [The Guardian]
• New York City is the second most energy-efficient city in the country, behind only Boston. [NYDN]
• Lilac, the last remaining steam-powered lighthouse tender in the country, has been transformed into an art gallery. Visit all summer at Pier 25 in Tribeca. [Gothamist]
• Mapping all of NYC’s public bathrooms. [BK Mag]

Images: Asylum by HOT TEA (L); Wireless station via Fast Co. (R)