This year Tokyo Metro turns 90 years old, and in celebration, it’s giving away passes good for 90 days of free travel.

Tokyo Metro, Japan’s first full-scale subway, began operation in December 1927, moving passengers from Asakusa to Ueno and back.

A campaign to celebrate the 90th anniversary includes a poster displaying its 1000-series trains and the slogan “underground is our future forever.”

Most importantly, though, the campaign includes a giveaway for a pass that allows for 90 days of free Tokyo Metro travel. 180 of the passes will be given away in a drawing, which you can enter on the official website. The drawing lasts until September 30.

More events celebrating Tokyo Metro’s 90th are also on the way.

For more details, visit PR TIMES (Japanese only)