Take a rarely seen look inside New York's famed Woolworth Building, which is now home to multimillion-dollar condos

Once the tallest building in New York City, the Woolworth Building is a historic landmark. Completed in 1913, the building was equipped to maintain its own electricity, heat, subway entrance, and barber shop. With past tenants such as Nikola Tesla and the Manhattan Project - the team that helped develop the atomic bombs during World War II - the building has been beloved by historians and New Yorkers for decades.

After the building's observation deck closed during World War II, the building was closed to tourists until 2013. Even now, access is somewhat limited.

But this week, Alchemy Properties revealed photos of two of the 33 brand-new luxury condos that are a part of the years-long conversion on the building's 29th through 58th floors. While not ready for move-in just yet, there will be one-bedroom condos available for $4.575 million, two-bedroom units for $7.2 million, and full-floor residences for $26.4 million. Previous reports by Curbed NY pegged the penthouse listing price at $110 million.

Luckily, Untapped Cities has given a handful of tours inside the building to show what it's like after all these years. A couple of months ago, we joined them for a tour that included an exclusive look at the basement. Below, learn about the building's historic past and check out the new photos of its luxury condos.

Jack Sommer contributed reporting to a previous version of this article.