The sign for Randy's Donuts is instantly recognizable — an enormous doughnut perched atop a modest doughnut shop. This Los Angeles landmark has been around since the early 1950s and has been featured in films such as “Iron Man 2,” but cartoon fans will recognize the distinctive sign from Homer's favorite doughnut shop in “The Simpsons.”

Moulin Rouge translates to “red mill” in French, so it’s only fitting that a red windmill sits atop the famous dance hall. Located in Paris’ Montmartre district since 1889, the windmill was a way for the Moulin Rouge to stand out. The Moulin Rouge is a symbol of the Belle Epoque era and remains a popular tourist venue.

Located around 1,200 feet from home plate in Kenmore Square, the Citgo Sign is as ubiquitous to Fenway Park as the Green Monster (the nickname for the left field wall). Measuring 60 feet by 60 feet, the current neon Citgo sign has stood since 1965. And it will be welcoming fans for years to come — it was designated an official Boston landmark in 2018.

The original Reno arch was built in 1926 to commemorate the completion of the city’s Lincoln and Victory Highways. A contest asked people to send in suggestions for a town slogan to be written under the Reno town name. In 1929, a Sacramento resident suggested “The Biggest Little City in the World,” and an icon was born.

“Penny Lane” was a No. 1 hit for the Beatles in 1967. While teens living in Liverpool, England, John Lennon and Paul McCartney would meet at the Penny Lane bus stop to go into town. The song mentions “the barber showing photographs,” “the banker with a motorcar,” and Paul wistfully sings “Penny Lane is in my ears and in my eyes”.

Seattle’s Pike Place Market was founded in 1907 as one of the oldest farmers markets in the U.S. Since opening, the market’s large red sign and clock has attracted locals and tourists alike. In its early days, the market was a hub for recent immigrants, with German, Italian, and Chinese farmers owning and operating almost half the stands. The market is still thriving today and is a must-visit in the Emerald City.

New York City’s Radio City Music Hall has been a landmark of the Big Apple since it was built in 1932. It remains the largest indoor theater in the world by capacity, taking up an entire city block, and is the home of the dancing Rockettes for their annual “Christmas Spectacular.” Despite being located just a few blocks from Times Square, Radio City’s eye-catching neon sign still manages to stand out.

Built in 1959 by Betty Willis, the vivid red, white, yellow, and blue “Welcome to Las Vegas” sign is part of the National Register of Historic Places. The 25-foot-tall sign was originally created to replicate the neon signs that advertised many shops and hotels in Sin City. But visitors leaving the city will see another message on its back side: “Drive Carefully, Come Back Soon.”

The red, white, and blue station signs — circular discs called roundels — used for London’s Underground (aka the Tube) were created by Edward Johnston in 1919. Prior to Johnston’s design, various roundels were used, but his design united all the signs for London’s Underground system and became emblematic of the city.

The Hollywood sign wasn’t always the legendary landmark that it is today — it was originally built in 1923 as a real estate marketing ploy to promote the upscale Hollywoodland real estate subdivision at the foot of the mountain. In 1949, the city removed the word “land” so that the sign would better represent the district as a whole.