Mentioned by Lonely Planet Top Choices
Top things to do in Belfast, Northern Ireland
"Guided tours of Belfast's notorious Crumlin Road Gaol take you from the tunnel beneath Crumlin Rd, built in 1850 to convey prisoners from the courthouse across the street (and allegedly the origin of the judge's phrase 'take him down'), through the echoing halls and cramped cells of C-Wing, to the truly chilling execution chamber. Advance tour bookings are recommended. The jail's pedestrian entrance is on Crumlin Rd; the car-park entrance is reached via Cliftonpark Ave to the north."