In the streat median strip.

A white concrete structure with a plaque attached to the front.

The gate marks the birth place of Michael Kovats (Michael Kovats de Fabriczy or Kováts Mihály) who served as a Cavalry Colonel during the American Revolution.  He is considered, along with Casimir Pulaski, a co-founder of the US Army Cavalry.  He was killed during the Battle of Charleston in May 1779.

Kovats became an officer in the Hungarian Cavalry under Maria Theresa. He later became a captain in the Prussian Cavalry, serving under Frederick the Great and earning the highest distinction in the Prussian Army, the Pour le Mérite. After learning about the American Revolution in 1777, he offered his sword to the American ambassador in France, Benjamin Franklin.

Kovats joined Casimir Pulaski, who was then brigadier general and commander-in-chief of Washington's cavalry. Kovats was tapped as colonel commandant of Pulaskis legion on April 18, 1778, and soon began training the Hussar Regiments.

In October, the legion was transferred to New Jersey and sent into battle with the British at Osborne Island on the 10th, and Egg Harbor on the 14th. After their initial success, the legion marched on Charleston, South Carolina. It was there that Kováts fell on May 11, 1779, and was laid to rest where he died.

To this date, Michael Kovats is celebrated by cadets at The Citadel Military College in Charleston, South Carolina, where part of the campus is named in his honor.

Source: https://www.europeafrica.army.mil/Who-We-Are/Mission-History

The text on the plaque reads in Hungarian:

ITT ALLOTT
KOVATS MIHALY
1724 - 1779
AZ AMERIKAI FÜGGETLENSÉGI
HABOR EZREDESÉNEK SZÜLÖHAZA.
HALALA 200. EVFORDULOJÁN
MEGJELÖLTE KARCAG

Translation: 

HERE LIVED
MIHALY KOVATS
1724 - 1779
THE BIRTHPLACE OF THE AMERICAN INDEPENDENT
WAR COLONIAL.
MARKED BY A MARK ON THE 200TH ANNIVERSARY OF HIS DEATH