The Great Synagogue of Budapest, commonly known as the Dohány Street Synagogue, is the second-largest synagogue in the world after Congregation Emanu-El in New York It is located in Budapest's Erzsébetváros neighbourhood. The capacity is 3,000. It serves as a neological Judaism centre.

This neo-Moorish temple, which is 75 m long and 27 m wide, was constructed between 1854 and 1859. The majority of its ornamentation is based on designs from Islamic architecture seen in North Africa and Moorish Spain (particularly the Alhambra). Ludwig Förster of Vienna employed "architectural forms identified with ethnic groups comparable to the Israelite people" since he believed it was impossible to define a "typical" Jewish architectural style. Frigyes Feszl is credited with creating the interior.

Theodor Herzl's birthplace was a short distance away from this synagogue. The Jewish Museum, which contains the Jewish Historical and Religious Collection, now stands in its place. It was built in 1930 in an architectural style that complemented the synagogue, and in 1931 it was attached to the main structure.

Dohány Street, which served as the border of the Budapest ghetto, has profound associations with the Holocaust.

The enormous synagogue, which seats 2964 people (1492 in the men's galleries and 1472 in the women's galleries), was constructed between 1854 and 1859 by the Neologian community of Pest following Ludwig Förster's designs. It is the largest synagogue in Europe and the second largest in the world. On September 6, 1859, the synagogue was officially dedicated.

On February 3, 1939, the pro-Nazi Arrow Cross Party bombed the original synagogue.

During World War II, it served as a German radio base and stable. During the Nazi occupation, particularly during the Siege of Budapest, the building sustained extensive air raid damage.

The severely damaged building once again served as the place of worship for the already drastically reduced Jewish population during the communist regime. 1991 saw the start of its restoration, which was finished in 1998. The Hungarian government as well as individual donations paid for the repair.

The Great Synagogue was initially constructed near a neighbourhood. Theodor Herzl was born in a home that was situated in a location that is now a part of the synagogue complex. In addition to the synagogue itself, the Great Synagogue complex also houses the Jewish Museum, the Temple of Heroes, the Jewish cemetery, and a Holocaust memorial.

The structure is 26.5 metres broad and more than 53 metres long. Although it has an Arabic appearance, its design incorporates elements of Gothic, Romanesque, and Byzantine styles. The two 43-meter-tall octagonal towers are topped by two domes each, and over the main entrance is a stained-glass rose window.

The Jewish Museum was erected next to the Great Synagogue on the site of the two-story, classicalist-style home where Theodor Herzl was born.

The museum, which was constructed between 1930 and 1931, houses religious artefacts owned by the Pest Hevrah Kaddishah (Jewish Burial Society), Shabbat ritual items, and sections devoted to the major Jewish holidays and the Holocaust.

Religious services are held at the 250-seat Heroes' Temple and Gallery on the weekends and in the winter. It was a 1931 addition to the Great Synagogue complex that was designed by Ferenc Faragó and Lázlo Vágó. It serves as a monument in remembrance of all the Hungarian Jews who perished in World War One.

Between the Jewish Museum and the Great Synagogue, in the Temple of Heroes' backyard, is where you'll find the cemetery. Jewish law prohibits cemeteries from being located on synagogue grounds, but because the synagogue was a part of the Jewish ghetto, the complex had to house some of the community's homeless members. This meant that, while going against Jewish tradition, more than 2000 individuals had to be buried on the grounds of the synagogue during the famine of the winter of 1944–1945, which along with the terrible cold decimated the ghetto.

The Memorial to the Hungarian Jewish Martyrs is located in the "Raoul Wallenberg" Emlékpark (memorial park) in the rear. The Nazis slaughtered at least 400,000 Hungarian Jews. It was created by Imre Varga and is designed to mimic a weeping willow with the names of the victims engraved on its leaves. Additionally, a memorial honouring Wallenberg and other Righteous Among the Nations has been built. Among them are Swiss vice-consul Carl Lutz; Giorgio Perlasca, an Italian who pretended to be a Spanish consul and continued the work of Angel Sanz Briz by issuing Jews Spanish passports while concealing the fact that they were not Sephardic; Monsignor Angelo Rotta, an Italian bishop and the Holy See's apostolic nuncio in Budapest;

The structure has two balconies, an organ, and three roomy, elaborately adorned naves. Several Torah scrolls that were saved from synagogues that were destroyed during the Holocaust are kept in the ark.

The Great Synagogue was rebuilt in the 1990s, which also marked Hungary's return to democracy. Estée Lauder, a daughter of a Jewish immigrant from Hungary, donated USD 5 million to help fund the three-year rebuilding project. In 1996, it was completed.

Frigyes Feszl, a Hungarian architect, created the ark that houses the torahs and the vibrant geometric frescoes. Men's seats are on the main floor, while women's seats are in the upper gallery.

Two of the musicians who have ever performed the organ, which has 5000 pipes and was constructed in 1859, are Franz Liszt and Camille Saint-Saens.

63 voices and 4 manuals make up this modern mechanical organ, which was constructed in 1996 by the German company Jehmlich Orgelbau Dresden GmbH.