First: Where are you starting from?
Inn at the Colonnade (4 West University Parkway, Baltimore, MD 21218)
Marriott BWI (1743 West Nursery Rd, Linthicum, MD 21090)
Johns Hopkins University (3400 North Charles St, Baltimore, MD 21218)
Holiday Inn Express (1701 Russell Street, Baltimore, MD 21230)
Residence Inn Baltimore (17 Light Street, Baltimore, MD 21202)
Sheraton Baltimore City Hotel (101 W Fayette St, Baltimore, MD 21201)
Sheraton Inner Harbor Hotel (300 South Charles St, Baltimore, MD 21201)
Maryland Science Center (601 Light St, Baltimore, MD 21230)
Courtyard by Marriott (1000 Aliceanna St, Baltimore, MD 21202)
National Aquarium in Baltimore (501 East Pratt Street, Baltimore, MD 21202)
Tremont Plaza (224 Saint Paul St, Baltimore, MD 21202)
Tremont Park (8 East Pleasant Street, Baltimore, MD 21202)
 
Other:
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