The Mapparium at the Mary Baker Eddy Library is a stunning, three-story, stained-glass globe that reflects a 3D representation of how the world was laid out in 1935.
Visitors pass through the globe on a 30-foot glass bridge, surrounded by a seven-minute audio-visual show of words, music, and LED lights to show how the world and ideas have changed over time.
The Mapparium was originally built as part of the Christian Science Publishing Society building, and opened on June 1, 1935.
Due to the size, concave, spherical walls, and hard surface, the Mapparium has unique acoustics that turn the room into a whispering gallery, where you can hear others across the room no matter which direction you are talking.
You can only visit the Mapparium as part of a guided tour. Tours run every 20 minutes and last 15-20 minutes. The Mapparium is only available when the library is open, Tuesday to Sunday 10 AM to 4 PM. You get free access to the Mapparium with the Go Boston Card.