Mark Pennell sits at the helm of his time machine.Mark's Almanac is a 90-second time travel that highlights the world's history from the very serious to the sometimes sublime.
Mark's Almanac for January 15, 2021
It was on this date in 1943 that the world's largest office building, the Pentagon was completed. And it was on this date in 1953 that a Pennsylvania Railroad train slammed into Washington's Union Station. Luckily, there were no fatalities.