- TripBuzz found 165 things to do with kids in or near New Castle, New Hampshire, including 162 fun activities for kids in nearby cities within 25 miles like Ogunquit, Hampton, Newburyport and Portsmouth.
 - From Fort Stark State Historic Site to Fort Constitution Historic Site, the New Castle area offers 113 different types of family activities, including: Historic Sites, Lighthouses, Parks and History Museums.
 - As the only city in New Hampshire comprised completely of island land, the city of New Castle is a prominent tourist destination. Visitors can enjoy the picturesque Sandy Beach, located just ten miles outside of Portsmouth. Visitors can also enjoy an educational experience by visiting the islands local museums, historical homes and landmarks.
 
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        47.2 Miles 
    
    
        
        
            The original purpose of the 1800s Portland Observatory was to monitor ships. The site currently houses a museum that concentrates on the history of the tower and allows visitors to get a bird's eye view of both Portland and the harbor.        
    
    
        47.2 Miles 
    
    
        
        
            Indoor garden, The Butterfly Place is a butterfly observation exhibit. The garden offers peaceful ambiance and large variety of butterfly species for viewing, educational tours and a souvenir gift shop.        
    
    
        47.3 Miles 
    
    
        
        
            The Contoocook River Canoe Company is a family owned rental authority offering a variety of kayak, paddle board, and canoe rentals. The company services those looking to participate in related activities on the Contoocook River, Merrimack River, and Glenn Lake.        
    
    
        47.3 Miles 
    
    
        
        
            With classes for all ages of children, Flips & Giggles Gymnastics provides personalized instructions for increasing a child's flexibility. The teacher starts with the basics, working them up to cartwheels and then handsprings.        
    
    
        47.4 Miles 
    
    
        
        
            Visitors can enjoy a variety of recreational activities including fishing, kayaking, cycling, walking, and jogging at Horn Pond. The paved path around the lake is 2 miles long and there also a lot of benches and picnic tables.        
    
    
        47.5 Miles 
    
    
        
        
            The Jasper Valley Swim & Tennis Club is a recreational facility that features numerous hardcourt tennis courts and sand volleyball areas. The complex also offers a full-size swimming pool with separate kiddie pool, and picnic areas with barbecue pits.        
    
    
        47.5 Miles 
    
    
        
        
            Featuring a 200 foot long ice rink, Flynn Rink offers visitors a space for classes, birthday parties, public skating, and other activities. The rink hosts local hockey leagues, with over 1000 seats available to spectators for watching games.        
    
    
        47.6 Miles 
    
    
        
        
            Eastern Promenade features a walkway for hiking, biking or roller blading, and the area includes several historical sites in Fort Allen Park, including the mast of the USS Portland and an American Civil War monument. Swim at the beach, or visit the railroad museum.        
    
    
        47.6 Miles 
    
    
        
        
            Visitors can learn the basics of horseback riding and horse care by taking private lessons at High Meadows Farms. Visitors can go on trial rides on the property, or simply check out the stables to see the horses.        
    
    
        47.6 Miles 
    
    
        
        
            Only 5 miles north of Boston and spanning 2,575 acres, the Middlesex Fells Reservation is home for activities that include rock climbing, hiking and mountain biking. Views of the stony hills are featured, along with ponds, lakes and trails.