Ticks, schmicks. Spend five minutes here, and you won’t be thinking about infectious arachnids. Instead, you’ll be thinking: How can I fit that giant bronze frog sculpture into my trunk? This picture-perfect coastal town of 7,500 is chockablock with art. Located on the east bank of the Connecticut River and Long Island Sound, just off Interstate 95, Old Lyme is about two hours south of Boston. Beginning in the late 1800s, Old Lyme was an arts colony, centered on the emerging American Impressionism movement. Much of the credit goes to Florence Griswold, who took in boarders to keep her family home afloat. One of her guests in summer 1899 was Henry Ward Ranger, a New York artist who helped turn Griswold’s late-Georgian home into a lively zone of artists, artwork, and artistic temperament. Docents share the colorful details as you tour the home, now part of the Florence Griswold Museum. Visitors quickly discover that the Griswold is just the tip of the art-berg.