anyone who enjoys maps should pay a visit to the Mapparium at the Mary Baker Eddy Library in the complex of buildings surrounding the Christian Science mother church on Mass. Ave. in Boston.
It's quite something... regardless of your attitude about religion or Christian Scientists. You walk inside a three-story-high globe with continents and countries laid out (according to a 1934 map of the world) on some 600 panels of stained glass. It opened in 1935, was restored five years ago, and the tour guides claim there is nothing else like it in the world.
Admission is by tour only, but the tours run frequently and tickets are only 5 bucks. You're exposed to an audio/visual presentation that highlights Eddy's beliefs but you also get to experiment with the unusual acoustics of the "room." A whisper at one end of the walkway through the globe can be heard just fine at the other end.