If you're ready for some fresh apartment envy—now that you've gotten over not living in an historic dome with the ghost of Teddy Roosevelt—press play below and enter a four-story penthouse downtown, atop one of the city's earliest steel skyscrapers (built in 1896). More recently it was re-created by architect David Hotson, and draped almost exclusively in white with little bursts of color. The home—inside the American Tract Society Building—features a swing, rock climbing columns, a terrace, and of course a steel slide that puts that other apartment slide to shame: