Falkirk Wheel in Scotland (Tomzoy / Dreamstime.com)  Falkirk, Scotland    Imagine boarding an elevator...in a boat. It&#x27;s not as crazy as it sounds. The Falkirk Wheel is exactly that—a lift for boats—and it serves a very practical purpose. It opened in 2002, the long-awaited answer to the question of how to link two canals whose inconvenient, lock-ridden connection had been severed nearly 70 years earlier. Not surprisingly, the lift has become a