Take a walk from U Lužického semináře street to Čertovka restaurant and you'll surely pass through the narrowest street in Prague. The street is located in the Lesser Town district, only a short walk from Charles Bridge.
Interestingly, since this street is so narrow that two persons may have difficulties trying to pass each other, traffic lights were installed at both ends of the street. Even though this was probably done for novelty rather than for convenience, many tourists push the button and wait until the street is empty.
You can get here by metro, Malostranská station, line A.
Address U Lužického semináře, 118 00 Prague 1-Lesser Town, Czech Republic
Coordinates 50°5'16.311" N 14°24'34.518" E