The grounds at Mount Calvert Historical and Archaeological Park are open every day from dawn until dusk for drive-in and walk-in visitors. The site is also accessible by water via canoe and kayak.
The house and museum exhibit are open April through October on Saturdays from 10 am to 4 pm, and on Sundays from 12 noon to 4 pm.
Archaeological excavations are open on most Saturdays from April through October.
Volunteers participate in all aspects of archaeology at Mount Calvert from excavations to artifact processing. For more information about volunteering at the Mount Calvert Historical and Archaeological Park please call 301-627-1286.