Harper's Ferry, the target of John Brown's famous raid, was an industrial center before the Civil War and a sprawling military base during the war. Hike 5 to 8 miles (your choice) with the writer of regional guides to explore sites rarely seen by visitors. Then spend the afternoon on the river flat or white water tubing! Flat water tubing is a calm relaxing float down the river and is suitable for anyone who weighs over 30 pounds. White water tubing is an adventurous and physically challenging activity and is suitable for those who are at least 12 years old and 5 feet tall.