It's another New York secret hidden in plain sight.

The famed Empire State Building (formerly the tallest building in NYC) opens its 86th- and 102nd-floor observation decks to visitors every day of the year, but few guests get to see the "secret" 103rd floor, where a narrow outdoor platform offers dizzying views of the city.

But on a stormy Tuesday, a group of journalists was invited up to the off-limits observatory, as the Midtown landmark proudly shows off the fruits of its multi-year, $550-million refurbishment.

While new indoor spaces and exhibits are part of the refit, one thing that hasn't changed are the majestic views from the top of the Empire State's spire.

Fancy a tour of more secrets of NYC landmarks? Check out a tour of Grand Central Terminal.

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  • Built in 1931, the Empire State Building has recently finished a $550-million renovation.

  • A gallery of celebrity portraits greets some visitors to the Empire State Building (ESB).

  • A second-floor gallery shows off the ESB's marble work.

  • A second-floor exhibit on sustainability celebrates, among other things, the ESB's <a href="http://www.huffingtonpost.com/michael-p-owens/energy-efficient-retrofits_b_1381972.html" target="_hplink">new LEED Gold rating</a>.

  • The 80th floor elevator transfer point has been redesigned as a museum about the construction of the ESB.

  • Mail chutes, even on the 80th Floor.

  • The main, 86th-floor observation deck.

  • New iPod Touch viewing guides help visitors spot landmarks.

  • The view from inside the 86th-floor viewing gallery, space that was previously used as a gift shop. Now, it's ideal for gawking even during inclement weather.

  • The view south toward One World Trade Center, which <a href="http://www.huffingtonpost.co.uk/2012/05/01/freedom-tower-one-world-trade-center-empire-state_n_1466670.html" target="_hplink">recently surpassed</a> the ESB in height.

  • Visitors enjoying the 86th floor observation deck.

  • A view of the Chrysler Building and Queens beyond.

  • Madison Square Garden is just visible in this photo taken from the west side of the ESB.

  • Downtown Manhattan and Brooklyn, as seen from the ESB.

  • The Statue of Liberty can be seen to the right of One World Trade Center.

  • Inside the elevator between the 86th and 102nd floors, a height gauge, in feet.

  • The 102nd floor observation gallery is much smaller and quieter than the scene on the 86th floor.

  • The Manhattan Cruise Terminal and a Carnival ship can be seen from the 102nd floor.

  • Another view of the Hudson River and Madison Square Garden.

  • The view downtown from the 102nd floor of the ESB.

  • Another downtown view, this one including a look at the AOL/HuffPost offices.

  • The view east, of Queens, Newtown Creek and Brooklyn, from left to right.

  • The "secret" door to the 103rd floor outdoor observation platform.

  • A relatively frightening warning sign on the 103rd floor.

  • Pipe work inside the 103rd floor.

  • A view of the narrow outdoor platform and its low railing on the 103rd floor of the ESB.

  • The view from the 103rd floor.

  • Looking north from the 103rd floor.

  • The three East River bridges can be seen in this view downtown.

  • The Chrysler Building, in the foreground, with LaGuardia Airport in the distance.

  • Looking down on the 86th-floor observation deck.

  • Looking down on the 86th-floor observation deck.

  • A view of the Flatiron Building.

  • Looking over the edge of the 103rd-floor observation platform.

  • Looking down on the 86th-floor observation deck.

  • The stairs leading back down to the 102nd floor.