8 Best Sights in Pennsylvania, USA

This is an absolute must-see for railroad buffs. In a 100,000-square-foot exhibit hall, the remarkable Smithsonian-affiliated museum showcases a world-class collection of 100-plus vintage locomotives and railroad cars made or operated in Pennsylvania. Exhibits contain a treasure trove of photos, artifacts, and memorabilia documenting the history of railroading in the state.

Recognized as the largest horological collection in North America, this museum is home to thousands of timepieces and time-related items. The museum's location isn't random: Columbia has had a long clockmaking and watchmaking tradition. In the museum, you'll see early sundials and water clocks; a German Black Forest organ clock with 94 pipes; moon-phase wristwatches; and other timekeeping devices from around the world.

One of this natural history museum's most popular attractions is Dinosaur Hall, with reconstructed skeletons of a Tyrannosaurus rex and some 30 others of its ilk, but interactive stations with docents and exhibits on topics including current environmental issues also help visitors engage with science and nature. Other areas are the Big Dig (open weekends at this writing), where you can hunt for real fossils, and Outside In, a hands-on experience where kids can climb into an eagle's nest, visit with animals, and more. State-of-the-art changing exhibitions are another highlight. The more than 35 dioramas of animals from around the world displayed in their natural habitats still have appeal and are gradually being renovated. Founded in 1812, the academy is considered the oldest natural history institution in the western hemisphere and a world leader in the fields of natural-science research and education; the present building dates from 1876.  Plan your visit ahead using the website's floor plan and program list. Weekdays and late afternoons are generally less busy times to visit.

Ever since Philadelphian Harold Pitcairn made the first rotorcraft flight in 1928, southeastern Pennsylvania has been considered the birthplace of the helicopter industry, and the impressive aircraft filling this museum in a business park near Brandywine Regional Airport reflect this heritage. A number of leading manufacturers remain in the region. About three dozen vintage and modern aircraft, a room of models, and information boards and short videos reflect the copter's historic roles in war and rescue missions, agriculture, and police surveillance. Docents provide context, and visitors can climb aboard a few aircraft and try the (nonmoving) flight simulator to get a sense of the helicopter experience. The museum is packed with information, but older children will appreciate it. 

One person's wide-ranging, entertaining collections of pop culture Americana from as far back as 1870 fill 100,000 square feet of a former tire factory, stuffed with delights such as a Chuck E. Cheese animatronic band, a hundred-foot-long Slinky surrounded by stuffed animals and circus posters, a giant Walkman, a Christmas village from Philly's long-closed Lit Brothers department store. A guided 45-minute tram ride through the Toy Box area provides endless visual stimulation (and auditory; you hear a few of the museum's many Wurlitzers in action). The arrangement is eccentric but amusing: a Hooters sign rises above a vintage Corvette. Visitors can see the classic cars section and the Music Room on their own. Even these are quirky: why are dolls propped on the radios and automatic pianos? All but the most anti-nostalgia types will find something that sparks memories—or amazed laughter from those too young to remember much of this stuff—in this cultural jumble.

Looking for something other than colonial history? This museum was created to tell the herstory of Black girls through personal objects used and cherished in everyday life. Established in 2015, the unique museum embraces the value of intimate spaces and the experiences of Black girls and their home life, with the aim to also be a research facility, exhibition space, gathering place, and think tank. The space hosts special exhibitions, and currently only Saturday tours are available via online reservation.

This multimedia experience features the life and work of Milton S. Hershey, who founded the town bearing his name—and just about everything in it. On display is a working Hershey Kiss wrapping machine plus other memorabilia from the company's long history. A highlight is the Chocolate Lab, which offers hands-on workshops (for a fee). The Pantry Cafe sells tasting flights of hot chocolates from around the world as well as light fare.

The showplace of the Train Collectors Association, this museum displays both antique and modern toy trains and is a must for toy train buffs. The museum has five huge train operating layouts, with toy trains from the 1800s to the present, plus nostalgic films and hundreds of locomotives and cars in display cases.