Enid A. Haupt Conservatory ca. 1978 The Enid A. Haupt Conservatory is perhaps the crown jewel of the New York Botanical Garden. It was key to the garden's initial mission to further " the collection of and culture of plants, flowers, shrubs, and trees, the advancement of botanical science and knowledge." The greenhouse was a relatively new typology, so the Botanical Garden hired the best architects of the type, Lord and Burnham Co., as its designers. The Haupt Conservatory was designed in the Italian Renaissance style. Portions of this crystal palace are renovated approximately every 20 years in order to ensure that the plants inside are taken care of with the most advanced technology. The high temperature and humidity of the tropical biomes cause the steel and glass structure to constantly expand, contract, and rust. Some of the more notable renovations occurred between 1935 and 1950 when much of the ornate decoration was removed in favor of a modernist look. Most recently, the Palm Dome has undergone structural stabilization and lead-based coating removal by Beyer Blinder Belle in 1973 and Jan Hird Pokorny Associates in 2019. The Conservatory is comprised of 11 biomes. The biomes, each contained under a dome, form a C-shape around the Palm Dome, the largest in the center. Interconnecting pavilions connect tropical plants, desert flora, fern forests, and seasonal exhibits to one another. The conservatory is still a major resource for the international study of horticulture, drawing hundreds of scientists a year. Built during an era where greenhouses were primarily an accessory of the elite, the New York Botanical Garden's conservatory enabled New Yorkers of all backgrounds to experience the flora and fauna of faraway lands.

290 East 201st Street, 1938.

3055 Webster Avenue, 1938.

St. Ursula's Academy, 1922. St. Ursula's, the oldest continuously operating Catholic girls' high school in New York State, was founded in 1855. German Ursuline nuns from St. Louis, at the invitation of a local reverend and the support of the Archbishop, moved to the Melrose area of the Bronx and founded a monastery. Upon its completion, the monastery began to offer classes and quickly attracted pupils from the local German community. The Monastery and Academy were incorporated together by the State in 1868 as the Ursuline Convent. However, the 1874 incorporation of the Bronx into New York City caused the relatively undeveloped land around St. Urusla's to quickly industrialize. This prompted the move to Bedford Park Boulevard in 1892 in order to secure less hectic surroundings for the convent. Its new hilly locale prompted the name to be changed to the Academy of Mount St. Ursula. Though the monastery has since dissolved, the Academy of Mount St. Ursula remains active.

Following the creation of the Greater New York City in 1898 the population of the Bronx boomed, and the need for additional municipal services became apparent. By 1905, the growth of the borough required expanded police forces. A new precinct, first known as the 41st Precinct, was completed in 1906 on quasi-rural land near the New York Botanical Garden. Designed by the firm of Stoughton & Stoughton, the neo-Italian Renaissance building is rendered in red brick and terra cotta. The wooden brackets at the roof, the clocktower, and the diapering (decorative diamond patterns) of the brick add to its quaint appearance. Renamed the 52nd Police Precinct by the mid-century, the building's exterior remains extremely well preserved. It is both a New York City landmark and is listed on the National Register of Historic Places.

The Mertz Library is sometimes called "the library hiding in a garden hiding in New York City." It is one of the largest botanical libraries in the world and the largest in America, with over half a million volumes in its general research collection alone. Use of the library is free and has been since its opening in 1881. The library was one of the first structures built on the grounds of the New York Botanical Garden. Its collection includes books and materials on history, anthropology, landscape, and building design, architectural history, ethnobotany, urban social history, environmental policy, including over 3,000 linear feet of archival materials. The Mertz Library holds both rare and historically important works, notably flower portraits by Pierre-Joseph Redouté and 19th-century American seed catalogs.