This fence is part of a kissing gate.

A kissing gate is a type of gate that allows people, but not livestock, to pass through. The normal construction is a half-round, rectangular, trapezoidal or V-shaped part-enclosure with the free end of a hinged gate trapped between its arms.

The name comes from the gate merely "kissing" (touching) the inside of the enclosure. It reliably forms a barrier rather than needing to be securely latched on each use. Courtesy: en.wikipedia.org/wiki/Kissing_gate

The more romantic notion, and one that I like, is that the first person to pass through would have to close the gate to the next person, providing an opportune moment to demand a kiss in return for entry. When we go through as a family it can take a bit of time for the kisses, but on that day I was by myself. :-)

Kissing gate - England