Eric W.
Yelp
There's a lot of things you need to be aware of before planning a visit to the Mack Trucks Historical Museum. You need to pre-book your tickets and a limited number of them are offered on Mondays, Wednesdays, and Fridays. It is a free guided tour but they suggest a donation, which I will tell you is worth it. Some GPS's apparently give wrong directions to get here, and while I did not have problems, you need to come in from the Airport on Lehigh Street. The drive does take you through a busy industrial park with vehicles parked along the road. There is plenty of parking with the museum entrance being clearly marked on the building. Outside were two newer Mack models on display, which was cool to see.
One day per year (in 2025 there was several more) however, the tour is different. On the Saturday before Father's Day, they offer an open-house in conjunction with the Antique Truck Club of America Annual National Meet that goes on in Macungie. That Saturday the tour is self-guided, but staff are around to answer questions. Layout of the museum is simple with four parts. You enter into the hallway gallery that has historical displays about Mack and their products, along with various historical items and models. The sound room gallery houses one of the most unique trucks in the collection, the screen used 2006 Mack that was Megatron in Transformers Dark of the Moon. Both the sound room and main gallery house numerous trucks, engines, transmissions, and model trucks. Several prototype trucks are also on display.
In the main gallery is also the largest bulldog in the world that was previously mounted on the Mack Headquarters building. The final area is the dyno and its control room. Doing the self-guided tour took me about an hour. The museum is generally enjoyable but is geared towards Mack enthusiasts. There is a gift shop, but I cannot comment on its quality as it was not open during my visit until later in the day. Overall, if you are a Mack enthusiast, this is a must stop, but there is enough to keep general visitors interested.