13 Best Sights in Hartford and the Connecticut River Valley, Connecticut

Housed in an 1878 steamboat warehouse, this museum tells the story of the Connecticut River through maritime artifacts, interactive displays, and ship models. The riverfront museum even has a full-size working reproduction of the world's first submarine, the American Turtle (named for its appearance); the original was built by David Bushnell, from nearby Westbrook, in 1775 as a "secret weapon" to win the Revolutionary War.

This strikingly modern building, designed by world-renowned architect César Pelli, houses 40,000 square feet of exhibit space under a wavelike roof that appears to float over the structure. Among the more than 165 hands-on exhibits, youngsters, teens, and adults alike can dive into a black hole and examine the moon's craters in the Exploring Space exhibit, race mini-sailboats and magnetic trains at Forces in Motion, and discover hidden athletic talents in the Sports Lab. Kid Space is perfect for ages three to six, and everyone enjoys mingling with free-flying butterflies in the Butterfly Encounter. Complete your visit by taking in a movie in the 3-D digital theater.

This excursion offers some of the best views of the Connecticut River Valley from a vintage steam locomotive pulled by 1920s-era coaches and an old-fashioned riverboat. The train, traveling along the Connecticut River through the lower valley, makes a 12-mile round-trip from Essex to Deep River Landing. Before returning by train to Essex, you have the option of boarding the Becky Thatcher riverboat and cruising along the river past Gillette Castle, Goodspeed Opera House, and fascinating deep-water coves and inlets. (The open promenade deck on the boat's third level offers the best views.) The train also hosts themed excursions such as the seasonal North Pole Express (from mid-November until Christmas).

The 122-acre park's main attraction is a rather outrageous, 24-room, oak-and-fieldstone hilltop castle—modeled after medieval fortresses of the Rhineland and built between 1914 and 1919 by the eccentric actor and playwright William Gillette. You can tour the castle (and its secret passages) and hike trails near the remains of a 3-mile private railroad, which chugged about the property until the owner's death in 1937. Gillette, who was born in Hartford, wrote two famous plays about the Civil War and was especially beloved for his play Sherlock Holmes (in which he performed the title role). In his will, he demanded that the castle not fall into the hands of "some blithering saphead who has no conception of where he is or with what surrounded."

Looking for a quintessential New England outing? The Lyman family first settled on a 37-acre plot just south of Middletown in 1741; today, it's an 1,100-acre orchard that's not to be missed. Get lost in the sunflower maze, then pick your own seasonal fruits—berries, peaches, pears, apples, and even pumpkins—from June to October. Or stop by the Apple Barrel Market, open all year long, to shop for farm-fresh pies, fruit baskets, jams and preserves, and gifts.

The more than 100 aircraft at this museum include gliders and helicopters, a World War II–era P-47 Thunderbolt, and a B-29 Superfortress, along with other vintage fighters and bombers—and an extensive collection of engines, instruments, parts, uniforms, and personal memorabilia. There's even a fighter-jet simulator. Next to Bradley International Airport, the museum also frequently holds open-cockpit days, allowing both young and old to play pilot.

The gold-domed State Capitol building, built in 1878 overlooking Bushnell Park, houses the state's executive offices and legislative chamber, as well as historical memorabilia. Walk past the statue Nathan Hale, the official state hero, to the Hall of Flags to see historic battle flags carried by Connecticut troops in wars from the Civil War through the Korean Conflict—along with a camp bed used by Marquis de Lafayette when he came to Hartford to meet with George Washington during the Revolutionary War. When the General Assembly is in session (January–early June in odd-numbered years; February–early May in even-numbered years), visitors can observe the proceedings from the public galleries. The League of Women Voters provides free guided tours each morning by reservation.

Fanning out from the State Capitol building, this city park is the oldest publicly funded park in the United States. Conceived by Rev. Horace Bushnell in the early 1850s, the park was designed by Swiss-born landscape architect and botanist Jacob Weidenmann. Some 1,100 trees and shrubs (157 different varieties) were planted, creating an urban arboretum. Kids love the Bushnell Park Carousel (open weekends, June–August), with its 48 intricately hand-carved horses and booming Wurlitzer band organ, built in 1914 by the Artistic Carousel Company of Brooklyn, New York, and installed in the park in 1974. A welcome oasis of green in a busy city, the park has a pond and about 750 trees, including a first-generation offspring of the state's historic Charter Oak (the state tree) and four enormous state champion trees.

This quaint ferry route has operated on the Connecticut River since 1769—originally a barge pushed by long poles, later using steam power, and now an open, self-propelled vessel. The crossing aboard Selden III, which accommodates 8 or 9 cars and 49 passengers, takes just five minutes but saves 12 miles of driving compared to taking the bridge. The bonus on the ferry ride: a beautiful view of Gillette's Castle, which overlooks the river.

Chapman Falls, a 60-foot cascade, is the centerpiece of this 860-acre park, an idyllic spot for bird-watching, picnicking, trout fishing (you'll need a license), camping, hiking, or simply dipping your toes in a clear, cold stream. The campground is open from mid-April through Labor Day.

In this park in Rocky Hill, about 9 miles north of downtown Middletown (halfway to Hartford), see 500 tracks left by the dinosaurs that roamed the area some 200 million years ago. The tracks are preserved under a giant geodesic dome—1,500 more are buried for preservation—making this one of the largest dinosaur-track sites in North America. You can even make plaster casts of tracks on a special area of the property.   To make a plaster cast, BYO 1/4 c. cooking oil, 10 lb. of Plaster-of-Paris, cloth rags/paper towels, and a 5 gal. bucket!

Opened in 1846, the country's oldest amusement park is known to locals simply as "The Lake." Today's attractions include a lakefront beach, a water park, and a clipper ship with a 300-gallon bucket of water that gives unsuspecting guests a good dousing. There are also some pretty hair-raising rides, such as the Sky Coaster, Wildcat (New England's oldest roller coaster), Boulder Dash ("World's #1 wooden coaster"), and Zoomerang.

A life-size walk-through replica of a 60-foot sperm whale greets patrons at this museum. Located in West Hartford, the museum also has a wildlife sanctuary and a planetarium with real-life images of outer space beamed in from NASA, as well as a hands-on puzzle exhibit that introduces kids to various scientific and mathematical concepts and optical illusions.