A 10-Day USA Itinerary: Boston, New York City & Washington, D.C. 📚 This guide is based on thorough research from official tourism resources rather than a personal visit. Written by Debarun Sana. This itinerary is built for travelers who want a deep dive into the history and culture of three of the most iconic cities on the U.S. East Coast. The easiest way to move between them is by train — Amtrak's Acela Express or Northeast Regional service is fast, comfortable, and drops you right in each city center, so you can skip airport transfers entirely. Best Time to Visit All three cities can be visited year-round, and each season has its own character — warm summers, crisp autumn color, snowy winters, and mild spring weather. Spring and autumn tend to offer the most comfortable temperatures for walking-heavy sightseeing, while summer is peak tourist season with the longest daylight hours. Days 1–3: Boston, Massachusetts Boston is one of the be...