“Maybe the oldest place on Earth you have ever been,” reads the sign at Gibbet Hill, perched atop the eons-old rock on St. John’s Signal Hill, whose age (3.5 billion years) will blow your mind. Head a short way up to the summit, and you find Cabot Tower, site of the first-ever transatlantic wireless radio transmission. Hop in the car for a short drive to Cape Spear, the most easterly place in North America, where you can look out over the ocean and imagine that you might just be able to see the …