NPS Photo

Time Clock at the entrance of the Building 5.

*To visit Glenmont Estate a pass must be obtained at the Laboratory Complex Visitor Center

Hours of Operation

Laboratory Complex

• Open Wednesday through Sunday.
• Hours are 9:00am - 5:00pm.
• Group Reservations required. Contact the Group Coordinator

Glenmont Estate

• Open Friday through Sunday.
• Grounds are open 11:30am - 5:00pm.
• Tickets for the house tour are limited and distributed on a first-come first-served basis from the Laboratory Visitor Center 
• Tours are offered between 12:00pm and 4:00pm 
• A pass must be obtained at the Laboratory Complex Visitor Center in order to enter Llewellyn Park where Glenmont is located