Altoona is a city located in central Pennsylvania, in the United States. It is the largest city in Blair County and serves as the county seat. The city is known for its rich history in the railroad industry, as it was once a major hub for the Pennsylvania Railroad. Today, Altoona is a vibrant and diverse community with a mix of urban and suburban areas. The city is home to a variety of cultural and recreational attractions, including the Altoona Railroaders Memorial Museum, which showcases the city's railroad heritage, and the Horseshoe Curve National Historic Landmark, a famous railroad engineering feat. Additionally, Altoona offers a range of outdoor activities, such as hiking, biking, and fishing in the nearby Allegheny Mountains.