Docents led three sold-out tours through the Civic Center on Thursday in celebration of the 150th birthday of the building’s famed architect, Frank Lloyd Wright.

One hundred fifty people participated in the discounted tours, provided for $1.50 per person, of the building constructed in two stages through 1969.

The tours included a first-hand look at the newly-exhibited, Wright-designed doghouse in the Marin County Free Library. The doghouse, donated by San Anselmo’s Berger family, will be showcased for viewing through Sept. 9.

Joan Brown, a member of the Frank Lloyd Wright Civic Center Conservancy Commission, led the day’s afternoon tour. She said the Civic Center is unique because Wright intentionally designed it as a center for democracy. It was meant to house all people for citizen participation in the local government, she said.