This 7,747 square-foot Swiss chalet home in River Forest has a unique feature, a train. Built during the 1920s, the current homeowner, and railroad enthusiast, bought the property in 1974, according to Realtor.com. He experimented with a model railroad in his basement before purchases the ridable train in Texas. The train runs around the property and can carry up to 10,000 pounds. In addition to the train, the home features six bedrooms, four full baths and two half-baths, a hot tub, sauna and and unground pool. The property is on the market for $3.5 million.