Rose

The former Verizon Building at 375 Pearl Street has long been considered one of New York City's ugliest buildings. The oppressive structure was erected in 1975 and climbs 540 feet into the sky. While the height is almost negligible compared to some of the supertalls rising today, the tower's prime skyline positioning amongst some of the world's most celebrated architectural creations has done nothing to help shroud its banal facade. In fact, when the telephone switching center opened its doors for the first time more than 40 years ago, New York Times architecture critic Paul Goldberger described it as the Verizon's "most disturbing" addition to the city (though in defense of the architects Rose, Beaton & Rose, it was built to withstand severe weather and attacks and protect the critical telecommunications infrastructure within). But all of that is changing now, as the building's fortress-like facade is in the midst of receiving a long due makeover.
More photos of the progress that's been made here