Muni kicked off Centennial Week on Sunday to celebrate its 100th birthday. Streetcars are rolled out on the oldest rail line, the J-Church, which opened in 1917.

Next Sunday, those streetcars will travel along Muni’s newest rail line, the T-Third Street, from downtown to Cesar Chavez Street.

During the week, several vintage streetcars will operate on the F line as part of regular daily service between the Castro district and Fisherman’s Wharf.

Also next Sunday, the transit agency plans to showcase a 1907 cable car from the former O’Farrell, Jones and Hyde Line, which will be put into service on the current California Street Line.

Passengers can catch a ride on the special routes from 10 a.m. to 5 p.m. They start at and end near the Ferry Building at the San Francisco Railway Museum.

To cap off the festivities, a restored Powell Street cable car will rejoin Muni’s fleet Nov. 14 and run with regular service for the rest of the week. Car No. 26, built in 1890 and acquired by Muni in a 1944 merger, has been restored to the paint scheme the Powell cable cars sported in 1947, according to Muni.