Visitor centers and sites are open year-round.

Downtown visitor center (15 State Street), open daily, 9:00 a.m. to 5:00 p.m.  

Charlestown Navy Yard visitor center open daily, 9:00 a.m. to 5:00 p.m.  Summer (July - August) open 9:00 a.m. to 6 p.m.   

Faneuil Hall open daily 9 a.m to 5 p.m. except during city sponsored events.

Bunker Hill Monument open daily from 9 a.m to 5 p.m. Last climb at 4:30 pm.  Summer (July - August) open, 9:00 a.m. to 6 p.m. Last climb at 5:30 pm.

USS CASSIN YOUNG open daily during the winter from noon to 3 p.m. Weather permitting. Below deck tours at 11 a.m. and 2 p.m.  Summer (July - August) open 10 a.m. to 5 p.m.     

U.S.S. CONSTITUTION is open Tuesday through Sunday, 10:00 a.m. to 4:00 p.m in the summer and Thursday through Sunday, 10 a.m. to 4:00 p.m. during the winter.

Most other historic sites are open 9:30 a.m. to 5:00 p.m. peak season and 10:00 a.m. to 4:00 p.m. off season.  

All park sites (except U.S.S. Constitution) and both visitor centers are closed Thanksgiving, December 25, and January 1. The park will also be closed on December 24, 2007.