A glass elevator whisks you up in just 40 seconds to the observation deck on the 42nd floor (135m) of the city's second-tallest building. (There's a less-dizzying option of riding a windowless lift.) There are indoor viewing areas and an outdoor balcony; on a clear day, panoramas extend for up to 45km, as far as Rotterdam, Leiden and Hoek van Holland. Tickets include a beer, house wine or soft drink at the bar; there's also a restaurant here, the Penthouse .
