Catch the circus at Staples Center and get discounted tickets with Metro! Photo: Ringling Bros. Barnum & Bailey Official Facebook

Check out the Los Angeles that could have been at the A+D Architecture and Design Museum. The exhibition Never Built: Los Angeles opens this weekend and features a collection of spectacular projects that only saw the drawing board. The museum is open from 11 a.m. – 5 p.m. on Friday, 12 p.m. to 6 p.m on Saturday and Sunday. General admission is $10. Show your TAP card at the front desk to receive $5 off tickets. (Metro Rapid 720 to Wilshire/Fairfax)

The circus is back in town! Ringling Bros. and Barnum & Bailey present Built To Amaze! taking place at Staples Center this weekend. Shows are on Friday at 12 p.m. and Saturday and Sunday at 11:30 a.m. Go Metro and save $8 on tickets. The exclusive Metro discount is also valid for other performances, visit the Ringling Bros. page to find out more information. (Metro Blue/Expo Line to Pico Station, Metro Silver Line to Figueroa/12th)

Head to Levitt Pavilion Pasadena to rock out under the stars. Free concerts take place at 8 p.m. on both Friday and Saturday and at 7 p.m. on Sunday. Check out their calendar page to see which bands are playing. (Metro Gold Line to Memorial Park Station, Metro Bus 267 to Walnut/Raymond)