how to get there
Nearest rail options are metro line 4 (Cité), metro lines 1, 7, 11, and 14 (Châtelet), and RER lines B and C (Saint-Michel). Nearby bus lines include 21, 24, 27, 38, 58, 81, 85, and 96.
security
The Conciergerie is inside the Palais de Justice perimeter, so security checks apply before entry. Bulky luggage, glass bottles, and sharp objects are prohibited; strollers must be foldable for X-ray screening. Plan extra buffer time at the gate.