PHILADELPHIA (WPVI) -- While for many businesses, Presidents Day is a slow day, at the National Constitution Center it's one of their busiest days. "It's a great day to have this lively event where ...

PHILADELPHIA (WPVI) -- If the waves of people coming into the National Constitution Center on Monday afternoon were any indication, many people took Presidents Day as an opportunity to learn about our ...

How many streets will be named after President Obama? The White House on Pennsylvania Avenue is seen in this file photo. Getty Images/Lonely Planet Images Feb. 17, 2014 — -- intro: Which city has ...