There’s a cannon in the Kremlin so big it’s never been fired in anger; no cannon ball has ever left its cavernous aperture. The Tsar Cannon keeps guard, uselessly, as waves of tourists stream past. Just down the path lies the Tsar Bell, the largest bell ever cast. But a huge, ten ton chunk broke off during the casting and its note has never sounded. They’re both massive and imposing, and designed only ever to be those. The Kremlin is full of such stuff, spanning the mega, the mini, and all in between. Elsewhere there were swords, regalia, thrones, helmets, shields, and guns. All owned by Prince this and Tsar that. There was a throne for the twin Tsars, complete with a secret compartment from which their mother and regent could whisper to them. And then, as if it were totally normal, you stumble into a side room and come eye to eye with a fully stuffed horse. The best bit was the royal carriages. These ornate wooden traps, often entirely gilded, or painted a deep maroon, w...