Gilgo Beach

From Memory Alpha, the free Star Trek reference

Gilgo Beach is a location on Earth where Benjamin Sisko met his future wife, Jennifer in 2354.

In 2369, the Prophets recreated Gilgo Beach to help Commander Sisko explain to them the concept of linear time. (DS9: "Emissary")

Gilgo Beach is an actual beach that is located in Babylon, Long Island, New York.