The Washington DC Power Pass sightseeing pass features many popular Washington DC area attractions which are open all year round. In addition, there are a number of seasonal Washington DC attractions whose operating schedule updates are listed below.

PEAK SEASON Washington DC area attractions and their 2010 closing dates – 

• DC Ducks | Washington DC Duck Boat Tour | SEASONAL  - Will be open daily until October 31, 2010 and then will be closed for the season. 
• Dulles Golf Center | Choose 1 of 3 Sports Activities | SEASONAL  - Will be open daily until October 9, 2010 and then will be closed for the season. 
• Full Day Washington DC Bike Rental | Bike and Roll | SEASONAL  - Will be open daily until November 24, 2010 and then will no longer be available. 
• Potomac River Cruises | Choice of 2 | SEASONAL  - Will be open daily until October 31, 2010 and then will be closed for the season.

2011 re-opening dates will be noted as they become available.

ABOUT THE WASHINGTON DC POWER PASS:

Visit the Washington DC Power Pass official website for more  Washington DC pass for sightseeing  information.

A complete  list of popular Washington DC area attractions  participating in the Washington DC Power Pass is also available on the Washington DC pass site.