Safeco Field, sometimes simply referred to as "Safeco," is the home of the Seattle Mariners baseball club. The stadium has a retractable roof with a train line running under the roof when it is open. Trains can be heard blowing their horns during the games. The stadium seats 47,116 for baseball. It was the host for the 2001 MLB All-Star Game. Other events have been held at Safeco Field, including the 2001 college football Seattle Bowl and WWE WrestleMania XIX, which set a Safeco Field attendance record of 54,097 in 2003.

Safeco Field is located in the SoDo district of downtown Seattle, bounded by First Avenue S. to the west, and Edgar Martinez Drive S. (formerly S. Atlantic Street, to the south, S. Royal Brougham Way to the north, and BNSF railroad tracks to the east.

Safeco Field has a unique retractable roof that only acts as an "umbrella" for the stands and field rather than forming a complete climate-controlled enclosure, as is the case with retractable roofs at Rogers Centre, Miller Park, Chase Field, and Minute Maid Park.

It is one of the few Major League ballparks to feature a manually operated scoreboard.

The stadium adjoins a working railroad yard which can be seen from the balcony behind the center field seats. Trains traveling through the yard sound their horns, which can be heard in the stadium and during broadcasts. Before the 2001 All-Star game Major League Baseball requested that trains traveling through the yard during the game not sound their horns; the Burlington Northern and Santa Fe Railway refused, citing safety concerns and Federal regulations.

Electric atmosphere to go with an electric stadium. Even if you don't like baseball this is still a "must see".