Newport, Rhode Island
In the early 20th century, New York's super-wealthy decamped for the summer to Newport, where they vied with one another to see who could build the biggest and most extravagant mansion. Many of those palatial summer residences are open today, either preserved or restored to their glittering glory. Look for echoes of the Grand Trianon and other European royal palaces, which several used as inspiration for their own excesses.
Marble House has an opulent salon, lined with pounds of gold leaf, and a fanciful Chinese Tea House. Less ostentatious and more livable, but no less grand, is Doris Duke's Rough Point, where her art collection is displayed. Follow Bellevue Avenue to see the public faces, then at least a part of the famous Cliff Walk to see these mansions from the shoreside. You can tour two of the most opulent of these - The Breakers and The Elms - on the Boston to Newport Small-Group Day Trip with Breakers & Elms Mansion, traveling by air-conditioned coach with a guide who will add perspectives about Newport's history, culture, and architecture. There is time to stroll along Newport's waterfront for shopping before returning to Boston.
Location: Newport County, Rhode Island, United States
Website: https://www.discovernewport.org/
Distance from Delaware: 84 miles
Travel time: 1 hour 32 minutes
TripAdvisor Review: 12,8343 reviews