Rockville Centre in Nassau County, New York — The American Northeast (Mid-Atlantic)

A Sacred and Significant Landmark

— Mill River Green Way Trail —

Photographed by Ian Lefkowitz, September 20, 2025

1. A Sacred and Significant Landmark Marker

Inscription. The Mill River Basin is home to many religious groups. But since the explosion of the population during the suburbanization of the region after World War II, Catholicism has been the most common religion among Long Islanders. Rockville Centre has become the eighth-largest diocese in the nation in the years since it was formed in 1957.

As of 2020, and for nearly a century prior, the steeple of the St. Agnes Cathedral has dominated the skyline as the tallest building in the Village of Rockville Centre and on the entire south shore of Nassau County. The current cathedral building was completed in 1935 and replaced a marble church built in 1905. Prior to that, the parish was served by a converted public school building on this site.

The cathedral's exterior underwent a major renovation that was completed in 1982, and a year-long interior restoration was completed in 2015.

Topics. This historical marker is listed in these topic lists: Architecture • Religion & Religious Structures. A significant historical year for this entry is 1935.

Location. 40° 39.513′ N, 73° 38.981′ W. Marker is in Rockville Centre, New York, in Nassau

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County. It is on North Centre Avenue north of South Station Plaza, on the right when traveling south. Touch for map. Marker is at or near this postal address: 58 N Centre Avenue, Rockville Centre NY 11570, United States of America. Touch for directions.

Regionally, this marker is in the New York City Metropolitan Area

and on Long Island.

It is also in the American Northeast

and in the Mid-Atlantic.

Globally, it is in the North Atlantic Region,

North America,

the Western Hemisphere,

the Western World,

and the Anglosphere.

Historically, it finds itself in what was once New Netherland

and also one of the original Thirteen Colonies.

Other nearby markers. At least 8 other markers are within walking distance of this marker: The Church of the Ascension (about 500 feet away, measured in a direct line); The Civil Rights Conscience of the Community (about 600 feet away); The Rev. Dr. Morgan Days Park (approx. 0.2 miles away); Anvil (approx. 0.2 miles away); English Laws and the Native American Experience (approx. 0.2 miles away); St. Agnes World War II Memorial (approx. 0.2 miles away); Saint Agnes (approx. 0.2 miles away); September 11, 2001 Memorial

St. Agnes Cathedral image. Click for full size.

Photographed by Ian Lefkowitz, September 20, 2025

2. St. Agnes Cathedral

The nearby St. Agnes Cathedral is the seat of the Diocese of Rockville Centre.

(approx. 0.2 miles away). Touch for a list and map of all markers in Rockville Centre.

Also see . . . St. Agnes Cathedral (Wikipedia). The Parish of St. Agnes was founded in 1887, when the first Mass was celebrated at Walter Johnson's blacksmith shop with an anvil as the altar. (Submitted on September 21, 2025, by Ian Lefkowitz of New York, New York.)

Photographed by Ian Lefkowitz, September 20, 2025

3. A Sacred and Significant Landmark Marker

The marker is located on North Centre Avenue, just north of the LIRR overpass.

Photographed by Ian Lefkowitz, September 20, 2025

4. A Sacred and Significant Landmark Marker

The marker is located along the Mill River Green Way Trail, established to connect Hempstead Lake State Park to Bay Park.

Credits. This page was last revised on September 21, 2025. It was originally submitted on September 21, 2025, by Ian Lefkowitz of New York, New York. This page has been viewed 69 times since then and 28 times this year. Photos: 1, 2, 3, 4. submitted on September 21, 2025, by Ian Lefkowitz of New York, New York. • Andrew Ruppenstein was the editor who published this page.