Free & Cheap Things to Do in Portsmouth

Parks & Nature

Prescott Park is Portsmouth's crown jewel — a stunning waterfront park on the Piscataqua River with formal flower gardens that bloom from May through October, river views of historic tugboats and working vessels, and a packed summer calendar of completely free outdoor events. The Prescott Park Arts Festival runs all summer long with free outdoor theater, concerts, and film screenings on the waterfront lawn, making it one of the best free summer entertainment programs in New England.

Address: 105 Marcy St, Portsmouth, NH 03801

Tip: The Arts Festival runs July and August with free performances most evenings and weekends — check the schedule at prescottpark.org and bring a blanket or low chair. The flower gardens peak in July. The park connects directly to the Strawbery Banke Museum border for easy neighborhood walking.

History & Culture

The Portsmouth Harbor Trail is a free self-guided walking tour through one of the best-preserved colonial downtowns in America, connecting 70 historic sites with a simple map and numbered markers. The route winds through cobblestone streets, past 18th-century merchant mansions, through Market Square — the city's lively commercial heart — and down to the working harbor. It's the best free way to experience four centuries of American history while exploring one of New England's most walkable cities.

Address: Starting point: Market Square, Portsmouth, NH 03801

Tip: Download the free trail map from portsmouthhistory.org before you go. The full trail takes about 2 hours at a leisurely pace. Market Square has good free parking on Sundays. Combine with a stop at Prescott Park for a complete downtown day.

History & Culture

Docked permanently in a park near Portsmouth's waterfront, the USS Albacore is a 1953 research submarine that pioneered the teardrop hull design now used by nearly every submarine in the world. Self-guided tours take you through the actual submarine — from the cramped torpedo room and control room to the crew quarters — with audio narration explaining the revolutionary engineering that changed naval history. For military history enthusiasts, it's one of the most intimate and affordable submarine museum experiences in the country.

Address: 600 Market St, Portsmouth, NH 03801

Tip: Tours are self-guided so you can linger in the compartments that interest you most. Claustrophobic visitors should note that the submarine's interior passages are genuinely tight. Open daily May through November; limited hours December through April. The surrounding park grounds and picnic area are free to visit even without a submarine tour.

Parks & Nature

Peirce Island is a small island in the Piscataqua River connected to downtown Portsmouth by a short bridge, offering a free outdoor swimming pool, picnic areas, walking paths, and sweeping views of the river and the historic tugboat fleet. The city-operated outdoor pool is open in summer for a very low daily fee, while the island's walking paths and river overlooks are completely free year-round. It's a beloved local spot that most tourists walk right past — which means it's uncrowded even in peak season.

Address: Peirce Island Rd, Portsmouth, NH 03801

Tip: The outdoor pool is open late June through Labor Day — a $4 swim in the river-cooled pool on a hot summer day is one of the best deals in Portsmouth. The walking path around the island's perimeter takes about 20 minutes and offers great views back at the city skyline. Free parking on the island.

History & Museums

A 1758 yellow Federal mansion where the Revolutionary naval hero John Paul Jones boarded while overseeing construction of his ship. Operated as a museum since 1920, with original furnishings and a peony-lined garden. National Historic Landmark.

Address: 43 Middle St, Portsmouth, NH 03801

Tip: Open seasonally Memorial Day weekend through October, Thursday–Monday 10 a.m.–4 p.m. First Friday of each month is FREE for everyone. Pair with a Discover Portsmouth Center visit on a $15 dual-site ticket if you have time for both.

History & Museums

A 1763 Georgian merchant's mansion on the Piscataqua River, home of Declaration of Independence signer William Whipple. Three floors of original family furnishings plus a restored 18th-century formal garden — among the finest in New England.

Address: 154 Market St, Portsmouth, NH 03801

Tip: Tour season runs mid-June through mid-October, Monday–Sunday 11 a.m.–4 p.m., closed Wednesdays. Garden-only admission is $2 if you just want a quick walk through one of New England's most acclaimed historic gardens.

Memorials & History

A free outdoor memorial dedicated in 2015 atop the only DNA-authenticated 18th-century African burying ground in New England. Sculpture, panels, and an Entry Piece tell the story of Portsmouth's enslaved African community in their own words.

Address: Chestnut St between Court and State, Portsmouth, NH 03801

Tip: Always open and accessible. Plan about 20 minutes for the full memorial walk. A meaningful pairing with a Black Heritage Trail NH self-guided tour through downtown Portsmouth.

History & Parks

The 1750s home of Benning Wentworth, New Hampshire's first royal governor — a sprawling yellow mansion on Little Harbor with 40 rooms and the oldest lilac trees in America. The grounds, gardens, and Little Harbor Loop Trail are free year-round.

Address: 375 Little Harbor Rd, Portsmouth, NH 03801

Tip: Mansion tours run Memorial Day weekend through Columbus Day, 10 a.m.–4 p.m. (last tour 3 p.m.). The grounds and harbor trail are open dawn-to-dusk year-round, completely free — a great picnic spot.

Parks & Waterfront

New Hampshire's largest oceanfront state park — 330 acres of coastal forest, salt marsh, and rocky shoreline 10 minutes south of Portsmouth. Tide pools, WWII bunker ruins (Fort Dearborn), and miles of hiking and biking trails along the Atlantic.

Address: 570 Ocean Blvd (Rt 1A), Rye, NH 03870

Tip: Note: some trails closed for ongoing dune restoration — check the park's map page before going. Sunrise on the rocky shoreline is the best free experience. Seacoast Science Center inside the park has a separate fee.

Arts & Culture

A free non-profit membership library and museum on Market Square, founded in 1817 — one of only 16 surviving membership libraries in the U.S. The third-floor Shaw Research Library and Randall Gallery are open to the public with rotating local-history exhibits.

Address: 9 Market Square, Portsmouth, NH 03801

Tip: Open Tuesday–Saturday 1–4 p.m. Free guided tours are available to members only — non-members can browse the gallery and library independently. Elevator access by request: call 603-431-2538.

Parks & Nature

A free 182-acre nature preserve and demonstration forest five minutes south of downtown Portsmouth. Self-guided trails wind through hardwood forest, a red pine plantation, and a salt marsh on Sagamore Creek. Run by NH Forests and Lands.

Address: 45 Elwyn Rd, Portsmouth, NH 03801

Tip: Trails open daily from 7 a.m. to dusk. The 2-mile Goodwin Trail loops through saltmarsh views — best in spring for native wildflowers. Office is 8 a.m.–4 p.m. weekdays; trails are accessible whenever the gate is open.

History & Museums

A 1760 Georgian mansion overlooking the Piscataqua River, considered one of the finest surviving 18th-century homes in America. Family-owned for generations before becoming a museum, with original woodwork, rare wallpaper, and period furnishings.

Address: 50 Mechanic St, Portsmouth, NH 03801

Tip: Open mid-June through mid-October, Thursday–Monday 11 a.m.–4 p.m. Tours run on a rolling 30–45 minute schedule. National Trust members get $3 off.

Shopping & Strolling

The cobblestone heart of historic Portsmouth — three intersecting streets (Congress, Market, and Pleasant) lined with women's boutiques, jewelers, a record store, gift shops, letterpress studios, and dozens of restaurants and bars. Market Square itself sits in front of the 1854 North Church and hosts free seasonal concerts, holiday tree lightings, and the Halloween parade. Walking tours leave from the Market Square Kiosk twice a week.

Address: Market Square (intersection of Congress, Market, and Pleasant Streets), Portsmouth, NH 03801

Tip: Park at the Hanover Street Garage or the Foundry Place Garage and walk in — meters fill fast in summer. Pickwick's Mercantile, Gus & Ruby Letterpress, and Stock and Spice are the standout independents. Combine with the Black Heritage Trail self-guided walk (also on this list) — both start within a few blocks of Market Square.

Markets & Food

Saturday-morning farmers' market run by Seacoast Eat Local in the upper parking lot of Portsmouth City Hall — five-minute walk from Market Square. New Hampshire and Maine farmers, ranchers, fishermen, bakers, and prepared-food vendors set up here weekly. Each Saturday features a community-guest table and live music from Seacoast musicians.

Address: 1 Junkins Avenue (Portsmouth Municipal Complex), Portsmouth, NH 03801

Tip: 2026 season: Saturdays 8am-12pm, May 2 through October 31. Park free in the lower lot at City Hall. Check the interactive market map at seacoasteatlocal.org/market-map/ to see which vendors are scheduled each week. SNAP/EBT accepted.

Free Walking Tours

A 24-site self-guided walking tour through downtown Portsmouth tracing the lives, stories, and contributions of the city's African American community from the 17th century forward. Sites include Pomp & Candace Spring's home, Cyrus Bruce's residence, the African Burying Ground Memorial Park (already on this list), and historic gathering places. Free downloadable PDF map; optional smartphone audio tour via Geotourist.

Address: Visitor Center: 222 Court Street, Portsmouth, NH 03801

Tip: Download the printable PDF map from the website before arriving — cell service is patchy in some downtown spots. Allow 90-120 minutes for the full 24-site loop. Guided tours leave from the Visitor Center on select dates (small fee — check the website calendar). The Geotourist audio version is a hands-free way to do the walk solo.