The original neon sign outside the famous Apollo Theater was put up in 1940. What's there today is a faithful reproduction, the installation of which was overseen by the Landmarks Commission. [Photo by David Lam]

The Cyclone would be pretty recognizable even without the big block letters at the top of the lift hill, but they certainly don't hurt. [Photo by Michael Tapp]

The Domino Sugar Factory was built in 1856, then completely rebuilt in 1882 after a fire, but the iconic 40-foot-hight signage wasn't added until the 1950s. Two Trees has promised to retain the sign as part of their ongoing redevelopment of the complex. [Photo by Joel Raskin]

The Essex House opened in 1931, and its six-story rooftop sign was erected the following year. The sign has made appearances in movies such as Madagascar (an animated version, of course) and Pizza Verdi. It was blacked out from 1940 to 1945 over fears of bombing raids.

The GE signs atop the famous 30 Rock, which themselves replaced the original RCA signs that topped the building from 1937 until 1969, are not long for this world. Building owner Comcast has Landmarks-approved plans to replace them with an LED-lit Comcast wordmark and put up a 17-foot NBC Peacock on the western facade. [Photo via New York Neon]

This neon beauty was put up in 1953 by prolific 20th-century sign-maker Charles Karsch for Philip Gringer’s appliance store. It was refurbished in 2007, so it remains in great shape. [Photo by Vivienne Gucwa]

Junior's Most Fabulous Cheesecakes and Desserts is currently on the market and development rights would allow for a 1,000-foot tower on the site, which means that its vertical lettering can be added to the Immediately Threatened list.

The famous Katz's Deli, the site of the Meg Ryan orgasm scene from When Harry Met Sally..., still has its original 1935 neon signage. [Photo by Matt Logan]

Even though it's currently dismantled and its future is uncertain, it wouldn't be an iconic signs map without the Kentile Floors sign. The sign is now under the stewardship of the Gowanus Alliance, who are looking for a new home for it in the neighborhood. [Photo by Nathan Kensinger]

The New Yorker Hotel's massive red lettering was installed in 1941. The hotel ran into financial trouble a couple decades later and the sign went dark from 1967 to 2005, when it was rebuilt with LED lights. New owners Wyndham have plans to redo it with color-changing LEDs that mirror those of the nearby Empire State Building. [Photo by Joanna Pan]

The "Leaving Brooklyn, Oy Vey!" sign on the Williamsburg Bridge is one of many sassy signs marking Brooklyn's borders. Others include "Fuhgeddaboudit," "Believe the Hype!" "How Sweet It Is!" "Go Take a Showah!" "You Talkin' to Me?!" [Photo via Ad Appreciation]

Long Island City's high recognizable 147-foot-long Pepsi-Cola sign, which dates back to the 1930s, was recently relocated to a specially carved out spot on the river-facing side of TF Cornerstone's new rental tower at 4610 Center Boulevard. [Photo by Joel Raskin]

Legendary appetizing store Russ & Daughters has been in the same Lower East Side location since it opened in 1914. Its neon sign, bordered by two multicolored fish, was installed in 1951 and, in recent years, was restored by 21st-century neon sign stalwarts Let There Be Neon. [Photo by Juni Safont]

The Watchtower sign has been put on the Endangered list by the Jehovah's Witnesses' recent selling spree, but it's still standing as of now.

For good measure, one more in Coney Island. The Wonder Wheel was built in 1920 and the signage followed soon thereafter. [Photo by woodendesigner]