NHK is the Japanese national radio and TV broadcaster, its BBC, known for news, educational programming, historical costume dramas, and a world service. Its mascot is Domo, a brown furry block with a gaping maw.
The Studio Park at the NHK Broadcasting Center is located 15 minutes north of JR Shibuya Station (Hachiko Exit) (which is up a hill) or 10 minutes west of the Harajuku (JR and Tokyo Metro) stations, adjacent to Yoyogi Park and Yoyogi National Gymnasium. Admission is normally 200 JPY, but I happened to arrive on Free Admission weekend, which also had sports activities underway outside (possibly related to tomorrow's national holiday, Sports and Fitness Day). There is a snack corner (outfitted with Domo-themed furniture and videos), gift shop and restaurant. Photography is generally prohibited.
The tour has 17 numbered stations reticulated across two floors, including electronic quizzes, theaters, and prop displays. There are English-language pamphlets, and all of the displays are profusely labeled, but aside from a few section titles (why would you bother with a lone "Drama Archives" nameplate on a video monitor in a cabinet?), it's all in Japanese, and it's generally designed for small children. There are three hands-on activities (animation dubbing studio, news studio, and audio/video editing) and an opportunity to remote-operate cameras as though you're a wildlife videographer (left-right-up-down-zoom). As a foreign visitor, you're probably not familiar with the TV shows depicted -- live-action, stop-motion or cel-animated. (There is one display that mentioned NHK World, but none of its shows or talent specifically.)
The first exhibit, in the ticket lobby, is an "8K Super Hi-Vision" video wall, tiled from 36 large flatscreen monitors; when I arrived, it was showing footage of the Takarazuka Review (an all-female performance troupe -- you might call them Vegas-style for their flashy costumes and staging, except they predate Las Vegas by several decades). The detail and dynamic range were impressive, although not much more so than the best consumer TV sets you'll see in stores nowadays.