Hibiya Open-Air Concert Hall

The Hibiya Open-Air Concert Hall (日比谷野外音楽堂) is an outdoor theater in Hibiya Park, Tokyo, Japan. There are actually two concert halls - the smaller was erected during the Meiji era, and the larger was first built in the Taishō era. The larger venue is colloquially abbreviated to "Yaon" (野音).

Notable events
The smaller music hall collapsed during the 1923 Great Kantō earthquake, but was rebuilt.

The large music hall was first built in July 1923. Initially, it was also used for other types of entertainment, such as boxing matches. It was closed in 1943 due to the Pacific War, but rebuilt in August 1954. Between 1982 and August 1983 it was completely rebuilt again.

The Tokyo Shimbun referred to a September 22, 1969 concert at Hibiya Open-Air Concert Hall sponsored by guitarist Shigeru Naromo as the first full-scale rock event in Japan. On April 13, 1975, during the final concert of the band Carol led by Eikichi Yazawa, a firecracker explosion following the last song caused the stage to catch fire and burn down.

On April 19, 1987, three people were trampled to death as the audience rushed to the stage at the beginning of a concert by Laughin' Nose. On September 20, 1987, Show-Ya held the first Naon no Yaon music festival at the venue. They held it annually for five years until 1991 and revived it for a one-off in 2008. In 2013, Naon no Yaon was fully resurrected in conjunction with the 90th anniversary of Hibiya Open-Air Concert Hall and has been held annually since.

Elephant Kashimashi first performed at Hibiya Open-Air Concert Hall in 1990, and it has become a tradition with them performing at the venue every year since.

In 2018, Kyary Pamyu Pamyu hosted a concert commemorating the venue's 95th anniversary. Beginning in April and set to continue until November, around 40 performances are scheduled to be held at the venue in 2023 in celebration of its 100th anniversary.

The Tokyo government decided to rebuild Hibiya Open-Air Concert Hall in 2021. Plans include constructing a roof over the stage and the front row seats, and enhancing the backstage area as performers have complained the preparation and waiting areas are cramped and difficult to use. Demolition of the existing hall is set to begin in or after fiscal 2024.