Arches I Like

Strolling back home last night through the Artists' Quarter,I spotted wooden formwork going up for what looks suspiciously like a catenary arch [the top picture],which,you may have noticed,is one of my favourite arches,and not often seen around here,where the preference is for the Roman or round arch,which is easier to build. The rebuilding of this square is taking ages,but there are some interesting structures going up,and it promises to have a lot more character than its former rather drab and sparse appearance,and even space for galleries [second picture].We should live so long.
The pictures were taken with my current phone,hand held- not bad,eh?