After inventing geometry and physics, Greeks invented history—primarily as a way to document their many inventions. Take a stroll through history with today's Groupon to The Reginald F. Lewis Museum of Maryland African American History & Culture. Choose between the following options:

• For $4, you get a one-day individual adult admission (up to an $8 value).
• For $17, you get a one-year individual museum membership (a $35 value), including general admission, 15% off at the museum gift shop, 10% off at the museum café, and discounts on select educational programs and lectures.

The Reginald F. Lewis Museum educates visitors about African-American figures and movements through special exhibitions ranging from art shows to artifact collections. Guests can take a break from organizing their closet of Dracula capes to see Olympic gold medal-winning gymnast Dominique Dawes' leotard, or peruse the museum's trove of political memorabilia or the historic headpieces of the Victorine Q. Adams hat collection.

The museum’s permanent exhibition examines the impact of slavery on the ultimately enduring spirits of Maryland African Americans. Other galleries, including Building Maryland, Building America, reveal how displaced Africans employed traditional skills to further their struggle for opportunity and equality.