"The Mount Washington Cog Railway offers a unique and exciting way to reach the summit of Mount Washington, the tallest peak in the U.S. Northeast. Operating for more than 150 years, the railway features a steep ascent with an average grade of 25 percent, and some sections reaching 38 percent. The journey, which takes about three hours round trip, includes a one-hour stop at the summit. During the summer, guests can choose between hourly biodiesel rides and less frequent coal-fired steam engine rides. Prices start at $74 for biodiesel rides and $87 for steam trains. The railway offers spectacular views, though caution is advised at the summit due to extreme wind conditions." - Travel + Leisure Editors