The clock tower of the Presbyterian Church House caught my attention. I zoomed in to admire the crown-shaped, copper dome with delicate pinnacles. Inside the belfry are a dozen bells, more than any other tower in Belfast. Equally interesting is the backstory on the architects, Robert Young and John Mackenzie. They began their practice in 1850 and developed numerous Belfast landmarks. The firm Young & Mackenzie continued in the family for 100 years.