Open Travel Guide
History of Connecticut

Connecticut History & Heritage Guide 2026

The history of Connecticut told through its places: sites worth the detour and the context they need.

Connecticut has 9+ historical sites covered in this guide, led by Mark Twain House & Museum, Harriet Beecher Stowe Center and Mystic Seaport Museum. Each entry below includes the practical details — what it costs, when to go, and how to plan around it.

Connecticut is New England's southernmost state — a compact, densely layered destination where Ivy League prestige meets colonial seafaring heritage, world-class pizza, casinos, and Long Island Sound beaches. From Yale's Gothic spires in New Haven to Mystic's tall ships, from Hartford's Mark Twain house to the gilded estates of Greenwich, Connecticut packs an extraordinary range of experiences into 5,543 square miles.

Historical sites

Places where Connecticut's past comes alive.

Historic

Mark Twain House & Museum

Where: Hartford

Admission: Adults $24 USD, Seniors $22 USD, Children (6-16) $12 USD

Historic

Harriet Beecher Stowe Center

Where: Hartford

Admission: Adults $16 USD, Seniors/Students $14 USD, Children (5-12) $10 USD

Historic

Mystic Seaport Museum

Where: Mystic

Admission: Adults $29.95 USD, Children (4-17) $19.95 USD

Historic

Wadsworth Atheneum Museum of Art (founded 1842)

Where: Hartford

Admission: Adults $20 USD, Seniors/Students $15 USD

Historic

Old State House Hartford (1796)

Where: Hartford

Admission: Free

Historic

Gillette Castle State Park

Where: East Haddam

Admission: Castle tours $8 USD adults, $3 USD children; grounds free

Historic

Submarine Force Museum & USS Nautilus

Where: Groton

Admission: Free

Historic

Florence Griswold Museum

Where: Old Lyme

Admission: Adults $14 USD, Seniors $13 USD

Historic

Griswold Inn Essex (est. 1776)

Where: Essex

Admission: Restaurant and bar open to public; no admission fee for historic building tours