As the nation marks its 250th anniversary, Pennsylvania’s role in the American story extends far beyond the iconic landmarks of Independence Hall and Valley Forge.

From Reading, where George Washington’s mobile headquarters tent — known today as the “First Oval Office” — was crafted, to a little-known Montgomery County encampment where exhausted Continental soldiers regrouped before becoming the formidable Grand American Army, local history reveals the people and places that quietly altered the course of the Revolution. Berks County riflemen armed with the Pennsylvania long rifle earned Washington’s praise, while southeastern Pennsylvania iron furnaces overcame early failures to forge the cannons needed to defend the fledgling nation.

Here is how you can step back in time to explore the remarkable stories of ingenuity, sacrifice and perseverance that helped secure American independence and continue to shape the nation’s identity 250 years later.

The First Oval Office: Reading

In early 1778, as Gen. George Washington endured the brutal Valley Forge winter, a new field headquarters tent — his mobile command center for the remainder of the Revolutionary War — was crafted in Reading.

Long overshadowed by the larger drama of the encampment, the tent’s origins in Reading reveal a local contribution to the nation’s founding that has only recently received the recognition it deserves, historians say.

“Washington’s tent was his command center during the Revolutionary War, and tells the story of his inspiring leadership, unyielding determination, and steadfast devotion to his troops,” Michael Quinn, then-president and CEO of the Museum of the American Revolution, said during the 2017 opening of the museum in Philadelphia. “It is a powerful symbol of American freedom, and one that we are thrilled to be able to preserve for future generations.”

The 23-by-14-foot tent, made of linen canvas, served as Washington’s office, sleeping quarters, and strategic hub from 1778 to 1783. It traveled with him through the war’s most consequential moments. The structure was a sophisticated, multichambered canvas marquee divided into an office, Washington’s sleeping area, and a space for his enslaved valet, William Lee. Inside these linen walls, Washington drafted dispatches, met with aides such as Alexander Hamilton, and shaped the military decisions that would ultimately secure American independence.

Today, Washington’s tent is the signature artifact of the Museum of the American Revolution. Installed after a years-long conservation effort, the tent is displayed in a dedicated 100-seat theater as part of a 10-minute presentation. More than 1 million visitors have viewed it since its installation.

Plan your visit: The First Oval Office

Location: Museum of the American Revolution, 101 South Third Street, Philadelphia

The vibe: An intimate look at the mobile command center where George Washington strategized the war and secured American independence.

Must-see: The 23-by-14-foot tent, originally crafted in Reading, displayed in a dedicated 100-seat theater.

Tip: The tent presentation is a popular 10-minute immersive theater experience. Be sure to check the museum’s daily schedule upon arrival to secure your spot.

The Grand American Army Encampment: Towamencin Twp.

Montgomery County’s place in the nation’s founding is well documented in Revolutionary War history, from the winter at Valley Forge to nearby battles at Whitemarsh, Paoli, and Brandywine.

What is lesser known is an encampment by Washington and his troops in the hills and woods of Towamencin Twp. that transformed his army into the Grand American Army of 11,000 soldiers.

“They walked in as the Continental Army, and they walked out as the Grand American Army,” said historian Victor Verbeke, describing the Colonial soldiers’ encampment located between what are now the boroughs of Lansdale and Souderton.

Several Revolutionary War veterans are buried in Tennis-Lukens Cemetery in the township, and the township’s Morgan Log House dates back to the early 1700s. But there is not yet a marker that notes the site of the army’s encampment that “refreshed” their abilities, according to historians.

Last summer, two local historians made a request to the state’s Historic Preservation Office for a marker to indicate the location that proved so key to the young nation in the fall of 1777.

“General Washington and 11,000 Continental soldiers spent eight whole days here, from October 8 to October 16 of 1777,” Verbeke said. “There were no battles fought here, but there were some significant events that this township can be proud of. The residents, back in the day, on both sides of the Skippack Creek, welcomed these soldiers, most importantly fed these soldiers, and provided them with what General Washington specifically told John Hancock: ‘Rest and refresh my men.’”

Plan your visit: The Grand American Army Encampment

Location: Detwiler Road near Delp Drive in Towamencin Township (Montgomery County)

The vibe: A quiet, historically rich exploration of the grounds where 11,000 Continental soldiers rested and reformed after brutal campaigns.

Must-see: The historic Morgan Log House dating back to the early 1700s, and the Tennis-Lukens Cemetery, the final resting place of several Revolutionary War veterans.

Tip: Keep an eye out for future historical markers. Local historians are actively petitioning the state to officially recognize the exact locations of the encampment.

The Pennsylvania Long Rifle: Berks and Lancaster Counties

What most distinguished Revolutionary War soldiers from Berks County and Pennsylvania was their weapon of choice: the Pennsylvania long rifle.

That weapon played a decisive role in the regions included in Congress’ call to form an army, said Gregory Kreitz, a former Reading Eagle reporter and local history buff. Thompson’s Rifle Battalion drew recruits from counties including Bedford, Cumberland, York, Northumberland, Northampton, Lancaster, and Berks.

After the battles at Lexington and Concord in 1775, Kreitz noted it’s likely America’s founders were wishing for some kind of silver bullet. That silver bullet was a lead ball shot from a Pennsylvania long rifle with deadly accuracy up to 300 yards.

The rifle was first made in the early to mid-1700s by German immigrant gunsmiths in Lancaster and along the Wyomissing Creek in Berks County. Its greater range came from patched balls and spiral grooves inside a lengthy barrel, which spun the balls as they shot.

The congressional war resolution on June 14, 1775, was the first time an army was officially drafted — and it was solely riflemen. The resolution called for riflemen from Pennsylvania, Maryland, and Virginia, all areas along the Great Wagon Road — running from Philadelphia to the Shenandoah Valley — where long rifle gunsmiths had settled and sold their wares.

After major victories at Trenton, Assunpink Creek, and Princeton, Washington moved all his riflemen into one corps, commanded by Col. Daniel Morgan.

Plan your visit: The Pennsylvania Long Rifle

Location: Landis Valley Village & Farm Museum, 2451 Kissel Hill Road, Lancaster, and Berks History Center, 940 Centre Ave, Reading

The vibe: An authentic look into the meticulous craftsmanship of the 18th-century German immigrant gunsmiths who forged the frontier’s most decisive weapon.

Must-see: The collections of beautifully preserved, original Pennsylvania long rifles. Look closely for the intricate woodwork and imagine the spiral grooves inside the lengthy barrels that gave the weapon its deadly 300-yard accuracy.

Tip: Landis Valley is a living history museum that frequently hosts historical demonstrations. Check their seasonal schedule before you go to see if you can catch a glimpse of early blacksmithing and gunsmithing techniques in action.

The Revolutionary Iron Furnaces: Berks, Lebanon, and Chester Counties

After the battles at Lexington and Concord kicked off the war, Pennsylvania leaders decided they needed to protect Philadelphia’s port. To defend the waterways leading into the city, they devised a plan to create a navy and line the shores with cannons.

A cannon committee organized by Benjamin Franklin was tasked with answering a crucial question: Were the people and facilities needed to make cannons available locally? The answer was yes, historian Dan Graham said. Southeastern Pennsylvania had several working iron furnaces, including Hopewell in Berks County, Cornwall in Lebanon County, and Warwick and Reading in Chester County.

The forge operators got to work in the spring of 1776, but there was a catch: They had never made cannons before. Their early efforts were a mess, Graham noted.

Eventually, an expert was brought in to help the locals figure out the pervasive kinks. For about 18 months, local furnaces successfully produced working weapons — 12-pound cannons at Hopewell and Cornwall, and 18-pound cannons at Warwick and Reading.

Once France entered the war effort in late 1777 and began providing weapons, local cannon production fell by the wayside. However, remnants of this early weapon manufacturing era remain. Graham said half of a cannon is still on display at Hopewell, while a fully preserved cannon can be found at Cornwall.

Plan your visit: The Revolutionary Iron Furnaces

Location: Hopewell Furnace, 2 Mark Bird Lane in Elverson (Berks County), and Cornwall Iron Furnace, 94 Rexmont Rd, Cornwall (Lebanon County)

The vibe: Early American industrial ingenuity on display, highlighting the local forges that scrambled to build the cannons needed to defend Philadelphia’s port.

Must-see: A fully preserved cannon from the era at Cornwall, and the historic half-cannon remaining at Hopewell.

Tip: Because the sites are spread across two counties, plan a scenic drive to see how the local landscape supported these vital early ironworks.

WARWICK, R.I. (WJAR) — Rhode Island’s Lego Fan Convention Returned to the West Warwick Civic Center.

Professional Lego artists from around the country displayed their creations and connect with fans.

There are meet and greet opportunities with Lego celebrities too.

Fans can also show off their own skills in the event’s Brick Pits.

The Vermont Lottery offers several draw games for those willing to make a bet to win big.