At 3 months old, a baby is in the "sweet spot" for travel before they become mobile, meaning you can take them almost anywhere that is hygienic, climate-controlled, and accessible. In 2026, low-impact destinations like botanical gardens, art museums, and quiet beach resorts are ideal. Museums are particularly great because they are usually air-conditioned, have wide elevators for strollers, and offer quiet "nursing" areas. You can also take a 3-month-old on a plane; most airlines allow infants this age to fly with a "lap infant" ticket or in a bassinet provided on long-haul flights. However, you should avoid crowded, high-noise environments like loud concerts or theme parks during peak sun hours, as an infant's immune system and temperature regulation are still developing. A "pro-tip" for 2026 parents is to look for "Baby-Friendly" cinemas that offer "cry-room" screenings with dimmed lights and lower volume. As long as you have a well-stocked diaper bag and a comfortable baby carrier, the world is quite open to you at this stage, provided you maintain a flexible schedule that respects the baby's nap and feeding cycles.