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The Mount Vernon Trail is located just across the river from Downtown Washington, DC and is a great multi-use recreation trail. The recreational trail is nearly 18 miles long and it follows the Potomac's Virginia shoreline from Theodore Roosevelt Island to George Washington's Estate located at Mount Vernon. The excellent scenery and consistently well-maintained condition of this paved surface makes the Mount Vernon Trail a favorite of cyclists, hikers and runners.

C & O Canal Boat Rides offers outdoor enthusiasts a chance to get closer to nature while learning some interesting history about the Chesapeake and Ohio Canal. It begins as a history lesson in the 1870s when these waterways were used for trade, and that era is highlighted as you pass several historic buildings as the tour progresses. Beautiful foliage and even some trails can be seen from the boat, as the 1 hour canal boat ride is both an historic and visually appealing experience sure to delight visitors who are out to learn as much as they can about this area of the country.

Want to know where all the money comes from? Then get set to find out on one of Washington, DC's most popular tours when you visit the Bureau of Engraving and Printing. Some of the exhibits include bills that are no longer in circulation, counterfeit money and a staggering $100,000 bill, along with a presentation of how money is produced and printed. In keeping with fiscal responsibility, the tour is actually free but during peak summer months, admission tickets are given out on a first-come, first-served basis.

The National Building Museum presents several fascinating exhibits that cover architecture, construction and engineering. And while several of the country's most famous structures are spotlighted, the actual museum building itself is an exhibit in its own right. This amazing venue features massive columns, a picturesque fountain and a highly decorated ceiling that reaches 15 stories upward. Several interactive exhibits are part of the many highlights, including temporary exhibits that focus on the development of ghettos, roads, factories, parks and more. If it was built, the chances are its story is within the walls of this incredible museum.