Spring sets the stage for plenty of outdoor activities, including hiking. And, if you're in the mood to get a glimpse into Pennsylvania's rich past, you'll find several trails that will lead you to extraordinary ruins in Pennsylvania like the following:

1. Lausanne Ruins – Carbon County, PA

Just outside of Jim Thorpe sits a densely wooded area, which way back in the 1700s housed the town of Lausanne. Marvel at the remains of that now forgotten town. Hike for a little over a half of a mile to the remains of the ghost town. (The trail leading to the ruins is believed to have been a stage coach route in the 1700s and 1800s.) Click here and scroll toward the end of the page for directions to the Lausanne Ruins.

2. Linn Run State Park – 770 Linn Run Road, Rector, PA 15677

Discover stone ruins on your hike along the half mile Flat Rock Trail in Linn Run State Park. The trail culminates with a visit to a large flat rock (thus the name Flat Rock Trail) jutting out of a stream. Be extremely careful if you attempt to stand on the flat rock as it is slippery.

3. Dead Man’s Hollow – Liberty Way, McKeesport, PA 15133

Deep in the woods of Dead Man's Hollow in Western Pennsylvania lie the remains of a century old factory. Follow Ruins Trail - orange on the trail map - that spans only .32 miles and that will lead you directly to the industrial ruins. Dead Man's Hollow boasts six miles of trails that go past ruins, the Three Trunk Sycamore Tree, and an Enchanted Staircase. Click here for a map of Dead Man's Hollow.

4. Former Village of Yellow Springs - Clarks Valley, PA

Embark on the Yellow Springs Loop Trail that will lead you to the ruins of the former Yellow Springs Village as well as an old excavator. You'll know you've arrived at the abandoned village when you see the sign announcing "Yellow Springs - Old Coal Mining Village." Click here to customize directions to the Stone Tower Trail, which will branch off onto the Yellow Springs Loop Trail.

5. Valley Forge National Historic Park – 1400 North Outer Line Drive, King of Prussia, PA 19406

Follow the yellow blaze Horseshoe Trail at Valley Forge National Historic Park to explore ruins. As you hike Mount Misery, you'll see the ruins of a former bottling plant and other structures. Follow the Valley Creek Trail, once you reach the top of Mount Misery for breathtaking views, to return back to your starting point.

6. Michaux State Forest – Shippensburg, PA 17257

Hike the Sunset Rocks Trail in Michaux State Forest, which will lead you to the spectacular ruins of a POW camp during World War II. The loop trail spans 8.3 miles over pavement, dirt, and grass. The hike is rated moderate to difficult.

7. Delaware Gap National Recreation Area – 1978 River Road, Bushkill, PA 18324

Be prepared for a challenge when you journey along the Tumbling Waters Trail, a three mile loop that is rated moderate to difficult. Follow the orange blaze that will take you past spectacular scenery, including ruins, ponds, a waterfall, and a pine forest.

8. Rolling Hill Park – 1301 Rose Glen Road, Gladwyne, PA 19035

Head out on the blue trail at Rolling Hill Park that leads to Mill Creek where you'll find jaw dropping ruins that date back to the early 20th century. The stone ruins are said to have once served as housing for mill workers.

Embark on these trails that will take you to unforgettable ruins in Pennsylvania. If you like ghost towns, you'll find spectacular ruins near Jim Thorpe.