Come to Port Jefferson this weekend and take a trip back in time. The incorporated village is showing off its roots with the second annual Heritage Weekend featuring more than 18 historical attractions under the theme of “Sport & Recreational Pastimes.”

“We want people to get a real sense of what Port Jefferson was like in the past,” says event chair Jill Russell, who received a grant for the event from the Robert David Lion Gardiner Foundation. “There are so many hidden treasures in the village that people just don’t know about. The point is to discover the history of the village and the stories behind it.”

Here are 10 activities you can do to turn back the clock.

COSTUME DISPLAY

Come see the vintage clothing on display at Antique Costume & Prop by Nan Guzetta located inside a Victorian home. The house, which was built in 1850 by Capt. Henry Hallock, served as a recording studio for the ’70s band Foghat.

LOCATION 709 Main St.

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OLD-TIME BASE BALL GAME

Watch a ballgame played by 1864 rules. In old-school uniforms, Eckford Base Ball Club of Brooklyn takes on the Port Jefferson softball team Sunday at 1:45 p.m. The game will be preceded by an hourlong presentation on 19th century base ball at 12:30 p.m.

LOCATION Joe Erland Field on Caroline Avenue

LETTIE G. HOWARD SCHOONER

Climb aboard this national historic landmark schooner, built in 1893, and learn about its commercial fishing past and the history of shipbuilding in Port Jefferson.

LOCATION The harbor at Danfords Marina, 25 E. Broadway

HOT AIR BALLOON

The Liberty Balloon Company will offer a slideshow presentation with an indoor inflation and outdoor basket demo at 12:30 and 3 p.m. on Saturday. Additionally, there will be an attempted balloon outdoor inflation demo (weather permitting) at 5 p.m.

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LOCATION On the harbor and at the Village Center, 101-A E. Broadway

GRAMMAS’ SWEETS

One of the favorite Port Jefferson businesses from 1911, Grammas’ Sweet Shop, will be honored and resurrected for the weekend in a pop-up exhibit.

“We are recreating what it used to look like when you walked into Grammas’ from the soda fountain bar on the right to the candy counter featuring chocolate and confection displays on the left,” Russell says. “It will also be functioning as a shop with soda jerks behind the bar recreating some items like ice cream floats, coffee and frappes.”

LOCATION 213 Main St.

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‘NIGHT OF SPIES’

This Revolutionary War interactive exhibit comes to life Saturday at 5 p.m. with actors portraying spies such as Anna Smith-Strong, Caleb Brewster and Austin Roe. Displays will include muskets, swords and other equipment. Participants can use the Culper codebook to decode a secret message.

LOCATION The Village Center, 101-A E. Broadway

FIRE DEPARTMENT MUSEUM

The Port Jefferson Fire Department will open its internal museum, which showcases firefighting equipment such as the Halligan bar, a prying tool used for forcible entry, or “The Frog” rescue vehicle.

LOCATION 115 Maple Place

CLOCK APPRAISALS

The Port Jefferson Historical Society will offer an antique clock appraisal Saturday from 10 a.m. to 1 p.m. and host an open house at its Mather Museum Complex, home to the Spinney clock collection.

LOCATION 115 Prospect Ave.

CHILDREN’S ACTIVITIES

The Port Jefferson Free Library, founded in 1908, will offer a host of activities including a geocache hunt (noon-4 p.m.), historic walking tours (1 and 3 p.m.), story time (noon-2 p.m.), lawn games (noon-4 p.m.) and more.

LOCATION 100 Thompson St.

RAINGUTTER REGATTA

The Maritime Explorium will get guests in an Olympic mood by hosting a Raingutter Regatta in the spirit of the U.S. Sailing Team. Craft your own mini sailboat and race it tabletop inside actual rain gutters filled with water Saturday and Sunday from 1 to 5 p.m.

LOCATION Chandlery Building, 101 E. Broadway