13 Best Things To Do In Charming New Castle, Delaware Mar.1.2021 When I first wandered down Delaware Street in historic New Castle in early 2020, I thought that I was stepping into Brigadoon, that mythical village in the Scottish Highlands that comes alive every hundred years. New Castle, however, is perhaps the most purely American place -- with four centuries of U.S. history. Today 21st-century inhabitants actually live and work in the townâs stunningly preserved buildings -- the real estate office, for example, was built in 1738, and the local tavern was originally built in 1674. Here you can explore history by wandering the 20-odd square blocks of streets lined with restaurants, cafes, and historic homes and gardens. You cannot fail to be impressed by the beauty of the many well-preserved Georgian, Federal, and Victorian-era buildings dating from the early 17th to the early 19th centuries. But you will not be the only ones who will revel in the townâs charms; New Castle has been named to numerous top 10 lists of most beautiful small towns in the United States.