What’s beneath your feet probably isn’t the first thing you think about when visiting a historic site. However, many of the nation’s historic homes and other structures sit atop unique subterranean infrastructure. Some of these hidden spaces are accessible to visitors and just as exciting as what’s above ground — from tunnels turned art galleries to an old bootlegger’s den. Whether you’re looking for a spooky site to visit during Halloween season or a place to cool off during the summer months, here are four basements to see at National Trust historic sites. Read the article from the National Trust that includes a section about the basement of the Woodrow Wilson House.