On A Clear Day

You can see Ontario. The wonderful ROCWiki website tells of the Great Mirage of 1874:

High atop Mt. Hope Cemetery once stood a towering structure known as The Fandango, rising above the treeline to offer visitors a breathtaking view of our city and the Genesee winding its way out to Lake Ontario. On a bright clear day, April 16th of 1871, early visitors to the tower marvelled at the unusual vision it afforded them: the landscape North of Main Street appeared as though it had radically changed overnight. As word spread throughout the day, it became clear to the thousands who gathered there to witness the spectacle that they were indeed not seeing Rochester at all, but instead found themselves able to make out the opposite shore of Lake Ontario in vivid detail. Lakes, forests, and Canadian landmarks were all somehow made easily identifiable to the naked eye despite their actual distance of over 50 miles away.

Cool, huh?