Chateau Crillon Apartment House

The 1900 Rittenhouse Square Apartments is a historic high-rise building on Rittenhouse Square in downtown Philadelphia, Pennsylvania. It was built 1923–1926.The 190 foot (58 m) tall, 19-story building has been converted to condominiums. 1900 Rittenhouse Square was added to the National Register of Historic Places in 1982. It was listed on the Philadelphia Register of Historic Places on January 7, 1982, and February 8, 1995.

Horace Jayne House (1895) is an architecturally significant building designed by architect Frank Furness in Philadelphia, Pennsylvania. It is located at the southwest corner of 19th and Delancey Streets, about a block south of Rittenhouse Square. The Horace Jayne House was added to the National Register of Historic Places in 1982.

The Academy of Vocal Arts (AVA) is a school dedicated to providing higher education to aspiring opera singers. It is the only tuition-free institution in the world devoted solely to operatic training and performance. The school was founded in 1934 by Helen Corning Warden and is located at 1920 Spruce Street in Philadelphia, Pennsylvania. Notable alumni include Lando Bartolini, Harry Dworchak, and Ruth Ann Swenson. The institution maintains a Hall of Fame for Great American Opera Singers which The Opera Quarterly described as equivalent to the kammersänger title in Europe. Some of the artists in the AVA's Hall of Fame include John Alexander, Rose Bampton, Lili Chookasian, Phyllis Curtin, Frank Guarrera, John Macurdy, Rosa Ponselle, Eleanor Steber, Jess Thomas, Jon Vickers, and Beverly Wolff.

Rittenhouse Square is a neighborhood, including a public park, in Center City Philadelphia. Rittenhouse Square often specifically refers to the park, while the neighborhood as a whole is referred to simply as Rittenhouse. The park is one of the five original open-space parks planned by William Penn and his surveyor Thomas Holme during the late 17th century. The neighborhood is among the highest-income urban neighborhoods in the country. Together with Fitler Square, the Rittenhouse neighborhood and the square comprise the Rittenhouse–Fitler Historic District. Rittenhouse Square Park is maintained by the non-profit group The Friends of Rittenhouse Square. The square cuts off 19th Street at Walnut Street and also at a half-block above Manning Street. Its boundaries are 18th Street to the east, Walnut St. to the north, Rittenhouse Square West (a north–south boundary street), and Rittenhouse Square South (an east–west boundary street), making the park approximately two short blocks on each side.

Temple Beth Zion-Beth Israel is a Conservative synagogue that is located in Center City, Philadelphia. Its congregation represents the 1964 merger of Beth Zion, which was formed in 1946, and Beth Israel, which was established in 1840. Temple Beth Zion-Beth Israel had 400 member households as of December 2022. The synagogue offers religious services, pre-school, Hebrew school, adult education, and community programming.

The Philadelphia Art Alliance at University of the Arts is a multidisciplinary arts center located in Philadelphia, Pennsylvania, in the Rittenhouse Square neighborhood. It is the oldest multidisciplinary arts center in the United States for visual, literary and performing arts.

The Rittenhouse Hotel is a luxury hotel in Philadelphia. Hotel was developed by Greenwood Group. It is a member of the Leading Hotels of the World.

Rafsnyder-Welsh House is a historic home located in the Rittenhouse Square East neighborhood of Philadelphia, Pennsylvania. The original house was built about 1855, as a typical brick Philadelphia rowhouse consisting of a front building, piazza, and back building. It was extensively remodeled and enlarged to its present form in 1893–1894. As presently formed, it consists of a four-story front building, approximately 34 feet wide and 36 feet deep, connected to a four-story back building, by a four-story section. Attached to the back building is a three-story, brick wing and two-story wing. A four-story fire tower was added in 1922. It has an eclectic front facade of Pompeiian brick with sandstone and terra cotta trim.The house was added to the National Register of Historic Places in 1980.

The Barclay Hotel was located at 237 S. 18th St. in Philadelphia, Pennsylvania on Rittenhouse Square. Opened in October 1929, it was, at one time, the most famous hotel in the city, and was owned by the well-known developer John McShain. After a later owner went into bankruptcy in 1992, the property was sold in 1994 and was converted to condominiums. The hotel was the site of the FBI's Abscam sting operation in 1980, which exposed corruption in government. Federal agents posing as Arab sheikhs rented a suite here, where they solicited the help of local, state and federal officials.The hotel was first put up for sale in 1989 for approximately $30 million. In April 1992, owner Barclay Hotel Associates filed for Chapter 11 bankruptcy. The property was purchased by Princeton developer Peter Marks for $4.3 million on Monday, October 31, 1994. Construction on the Barclay Condominiums was completed in 2005.

The Civil War Museum of Philadelphia (formerly the Civil War and Underground Railroad Museum of Philadelphia and previously the Civil War Library and Museum) in Philadelphia, Pennsylvania, claims to be the oldest chartered American Civil War institution in the United States. The museum was founded in 1888 by veteran officers of the Union Army, Navy and Marine Corps. In 2008, the museum closed to the public in anticipation of a move to other quarters. In June 2016 the museum announced that ownership of its collection of about 3,000 artifacts will be transferred to the Gettysburg Foundation, "the non-profit partner of the National Park Service at Gettysburg." Artifacts from the collection will continue to be displayed in Philadelphia at the National Constitution Center. Books, archives and other two-dimensional material will continue to be owned by the Civil War Museum and are available to researchers at the Heritage Center of the Union League of Philadelphia.While closed, the collection were stored at the Gettysburg Museum and Visitor Center, where material from the collection was displayed 2013–2015.

The Curtis Institute of Music is a private conservatory in Philadelphia. It offers a performance diploma, Bachelor of Music, Master of Music in opera, and a Professional Studies Certificate in opera. All students attend on full scholarship.

The Mutual Benefit Life Building is a 25-floor high rise office building at 1845 Walnut Street on Rittenhouse Square in Center City Philadelphia, 19103. It was designed by Eggers & Higgins and completed in 1972. The building was originally built by the now defunct Mutual Benefit Life Insurance Company of Newark, New Jersey. It is built over a former Philadelphia Parking Authority parking garage now operated by Parkway Corporation. The building was placed on the Philadelphia Register of Historic Places in 1995.