Bowing gracefully

The most graceful arch I could come up with.

_{A domed passage in Heidelberg.}

_{Alte Römerbrücke near Weinheim}

It’s not the most impressive monument or building but the bridge dates back to the Romans and it had some strategic value to them as even small rivers and rivulets have to be crossed if an army is on the move.

Linked to Cee’s Black & White Photo Challenge: Half Circles (Creative cropping), Arches, Domes