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Allegheny Portage Railroad National Historic Site
The Allegheny Portage Railroad was the first railroad constructed over the Allegheny Mountains. This inclined plane railroad operated between 1834-1854 and was considered a technological wonder in its day and played a critical role in opening the interior of the United States to trade and settlement. Allegheny Portage Railroad National Historic Site is located in southwestern Pennsylvania approximately 12 miles west of Altoona. Today's park covers 1249 acres. The main unit contains the Summit Level Visitor Center, the historic Lemon House, Engine House #6 Exhibit Shelter, the Skew Arch Bridge, picnic area and hiking trails. The Staple Bend Tunnel unit is located approximately 4 miles east of Johnstown, PA.
Maine ocean islands provide the only nesting sites for Atlantic puffins in the United States. Eastern Egg Rock in the midcoast region, Seal Island and Matinicus Rock at the mouth of Penobscot Bay, and Machias Seal Island and Petit Manan Island off the downeast coast provide habitat for more than 4,000 puffins each summer.