Vizcaya Museum & Gardens was built in the early 20th century in the Coconut Grove area of Miami Beach. It is a fanciful architectural mixture of various Mediterranean Renaissance styles. Coquina, a soft local sedimentary rock was used for much of its construction. In recent years it has undergone a thorough and extensive restoration.
The city walls of San Juan, Puerto Rico are a part of the San Juan World Heritage Site. The walls were begun in the 1630s with construction continuing for the next 150 years. They average 42 feet in height and are also about 42 feet thick at their base. The National Park Service began cleaning the walls with D/2 Biological Solution more than 8 years ago. The current project includes two distinct sections of the wall known as the Santa Elena and the San Augustin. Together they extend 2,600 feet.
MIT Building E52 is an Art Deco limestone building dating back to 1938. It was originally built for Lever Brothers and became the MIT Sloan School of Management in the 1950’s. Beyer Blinder Bell Architects was hired to complete the renovation and add a new addition. D/2 was specified to clean biological growth from the limestone facade.
Coral Gables City Hall was completed in 1928 by architect Phoneas Paist. It is built of local oolitic limestone in the Mediterranean Revival style consistant with the other public buildings of Coral Gables. It is on the National Register of Historic Places. Rosa Lowinger & Associates were hired to restore and conserve the delicate limestone façade. D/2 Biological Solution was used for the cleaning that was completed in July 2015.
On the National Register of Historic Places, Burial Hill in Plymouth, MA, is one of the oldest European cemeteries in America. Many of the original Mayflower Pilgrims are buried here including the first governor, William Bradford and Church Elder, William Brewster.
The project will span four years to be completed prior to the 400th Anniversary in 2020. The work includes conservation and cleaning of more than 2,269 historic stones. D/2 Biological Solution is the specified cleaner.
The Art Students League of New York was designed by Henry Hardenbergh and completed in 1892. Other Hardenbergh designed buildings include The Dakota, Plaza Hotel and Willard Hotel. Thomas Eakins and Augustus Saint-Gaudens were founding Board Members. Many of the 20th century's most important artists have studied here including Thomas Hart Benton, Jackson Pollock, Alexander Calder, Helen Frankenthaler, Roy Lichtenstein, Maurice Sendak and Robert Rauschenberg. Joan Berkowitz specified D/2 Biological Solution for the cleaning of the limestone façade.
The Biltmore Estate is the largest private home in America. It was designed by architect Richard Morris Hunt for George Washington Vanderbilt. It took over six years to construct and was completed in 1895. Frederick Law Olmsted designed the 8,000 acres of cultivated landscape. The facades and much of the interior is Indiana Limestone. D/2 Biological Solution has been a significant part of their maintenance cycle for many years.
Kohn Pederson Fox were the architects for Shearson Lehman Plaza, located at 388 Greenwich St. NYC, just a few blocks north of what was then The World Trade Center. It later became the Traveler’s Insurance Building. Now it is being transformed into the new Citigroup Headquarters and a major renovation is taking place.
The New York Public Library's landmarked Fifth Avenue building was designed by architects Carrère and Hastings in 1897 and completed in 1911. In celebration of the iconic building's 100th anniversary, it was given a facelift with D/2, washing away years of dirt and grime.