Oldest Arch, c. 1850 BCE

From CojsWiki

The most ancient arch in the world was found in the city of Ashkelon. It was part of the gate of the city wall. It was built mostly of mud-brick with some calcareous limestone. It is 15 meters long, over 2 meters wide and almost 4 meters high and consists of an arched corridor with arched openings on either end. The arch was restored by the Israel Antiquities Authority.

See also:

• Canaanite Fortifications of Ashkelon, c. 1950 BCE
• Silver Calf, c. 1600–1550 BCE
• Jerusalem Post: Oldest arched gate in the world restored, Apr. 8, 2008.