Travel insights and tips on some of the top attractions and best cities in the world

At the Please Touch Museum, pint-sized guests will get to tap out a secret message in Morse code, get schooled on the fundamentals of flight, "roast" a marshmallow and trade stories over a campfire, and much more. It's the perfect place for a kid to learn valuable skills through play – which is precisely the museum's mission.

It's quite fitting that the first true zoo in the United States originated in the historic city of Philadelphia. In 1874, the Philadelphia Zoo opened with 1,000 animals and an admission price of just 25 cents. Today, over one million visitors enjoy its endearing residents each year. It's regarded as one of the top zoos in America.

How much do you know about early American history? If you've been searching for a crash course on how a ragtag band of treasonous rebels built one of the most powerful societies in the world, look no further than the National Constitution Center in Philadelphia. Its location in the historic part of the city is within walking distance of the very place the Founding Fathers ratified the constitution almost 250 years ago.

Just minutes from the famed Philadelphia Museum of Art stands the Eastern State Penitentiary in Philadelphia, an imposing 19th-century Gothic structure in which both Al Capone and "Slick Willie" Sutton were incarcerated for their respective crimes.

Philadelphia, a city best known for Rocky’s epic run up the steps of the Philadelphia Art Museum, legendary cheesesteaks, and rowdy sports fans is also home to the Academy of Natural Sciences of Drexel University. This remarkable museum is filled with natural wonders that will leave you with a newfound appreciation for our blue planet.

Colorado's official air and space museum in Denver is the place to visit if you have ever dreamed of piloting your own craft, have even a passing interest in aviation, or are just excited to learn more about the mile-high city's contribution to the Air Force. With a hangar space of almost 200,000 square feet filled with military and civilian planes, the Wings Over the Rockies Air & Space Museum is a crowd-pleaser for guests of all ages.