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Courtyard Gaithersburg Washingtonian Center

204 Boardwalk Place  Gaithersburg  Maryland  20878  USA 

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(proof of eligibility required at check-in)

About special rates and awards

To make reservations by phone, call 1-800-321-2211 in the USA and Canada (or any of our worldwide reservation telephone numbers).

Visitor's Guide: Washington DC

Smithsonian Institution Building

Information On All Smithsonian Collections
  • 1000 Jefferson Drive Southwest 
  • Washington,  DC  20560
  • Phone: +1 202 633 1000
  • Email:
  • Web:  
  • Neighborhood: National Mall
  • Category: General History
  • Hours: Mo to Su from 08:30 AM to 05:30 PM
  • Train: "Smithsonian
  • Accessible for persons with disabilities: yes


Commonly known as "America's attic," the Smithsonian Institution is the world's largest museum complex and research organization. Organize your tours of the Smithsonian buildings in Washington by starting at the Institute's easy-to-locate red sandstone Gothic castle. Ongoing video presentations, touch screens, maps and helpful staff members will help you create a plan to navigate the many varied museums. The building is also commonly referred to as the "Castle."

Identification of these resources is solely for the convenience of our guests. Neither Marriott International, Inc. nor any of its affiliates or franchisees endorses or is a sponsor of these resources.