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The glass towers are part of the New England Holocaust Memorial (1995).

The apparent decorative pattern in the glass, when seen close-up, is actually six million random numbers, one for each Jew killed.

The Old North Church, where two lanters were held up to denote "two if by sea." That is, that the British were crossing the Charles River, a fact relayed by Paul Revere after his famous midnight ride.

"Old Ironsides," the USS Constitution, never beaten in battle.

The cannons below deck. During battle it was so cramped and smoky that the men had to learn how to operate everything blindly, and over the course of service most lost 80% of their hearing.