On March 28, the Americans enter Wiesbaden, ending twelve years of Nazi injustice here as well.

The heaviest air raid on Wiesbaden on the night of February 2 to 3 kills around 570 people and leaves 28,000 homeless. The spa district is particularly hard hit.

After the attempted coup of "July 20, 1944", retired Colonel General Ludwig Beck and Captain Hermann Kaiser lose their lives; the civilian resistance base in Wiesbaden under Heinrich Maschmeyer is not exposed.

Deportations of Jewish residents and Sinti to the extermination camps.

The Franco-German Armistice Commission meets in Wiesbaden from July 1, 1940 to September 9, 1944.

Destruction of the Wiesbaden synagogue on Michelsberg.

The Opelbad, a foundation set up by Wilhelm von Opel, is opened on the Neroberg.

Wiesbaden is declared an "emergency municipality" due to its poor financial situation, high unemployment rate and large number of welfare recipients.

There is early political resistance to the transfer of power to the Nazis; most of the resistance groups are arrested before the outbreak of war; the group around the later Lord Mayor Georg Buch is arrested in 1940/41.

The Reisinger complex is opened opposite the main railway station, financed by a foundation set up by the merchant Hugo Reisinger (1856 to 1914).

The occupying forces evacuate the Rhineland on June 30, which is also celebrated enthusiastically in Wiesbaden, especially at the Unter den Eichen fairground.

Opening of the airport near Wiesbaden-Erbenheim.

Bierstadt, Dotzheim, Erbenheim, Frauenstein, Georgenborn, Heßloch, Igstadt, Kloppenheim and Rambach are incorporated into Wiesbaden; Georgenborn is disincorporated again in 1938.

Biebrich, Schierstein and Sonnenberg are incorporated into Wiesbaden.

Wiesbaden becomes the headquarters of the British Army of the Rhine.

With the renewed proclamation of a "Rhenish Republic" in Koblenz, separatists occupy the town hall and other public buildings in Wiesbaden on October 23, but fail after a few weeks due to resistance from the population.

The "Wiesbaden Agreement" between Germany and France on Germany's reparation obligations is concluded.

On June 2, Hans Adam Dorten proclaims a "Rhenish Republic", whose capital is to be Wiesbaden, but fails with his separatist efforts.

On November 9, a workers' and soldiers' council is also formed in Wiesbaden; an executive committee of the SPD and USPD councils takes power for a few weeks; French occupation rule begins in December.

The museum on Friedrich-Ebert-Allee is completed. The city had committed itself to this building in 1899 when it contractually took over the museum collections from the Prussian government. The museum has been state-run again since 1973.

The new Kurhaus, built according to plans by Friedrich von Thiersch, is opened with a gala concert on May 11.

The main station is inaugurated on November 15. It replaces the three former stations of the Taunus Railway to Frankfurt, the Rhine line to Rüdesheim and the Ludwig Railway to Niedernhausen.

From May 6 to 19, the Royal Playhouse hosts the first "Festival", the forerunner of today's International May Festival.

The new theater building is opened on September 15 and a foyer extension is added in 1902.

On September 25, the Nerobergbahn is put into operation, which is still one of the city's attractions today.

The new town hall opposite the City Palace is occupied. However, it loses its rich neo-Renaissance façade due to the events of the night of the bombing on February 2-3, 1945 and the subsequent reconstruction in a simpler form.

Johannes Brahms composes his "Wiesbaden Symphony" here.

The first conference of the German Society of Internal Medicine takes place on April 20; this develops into an annual congress of internists, except during the war.

The municipal hospitals in Platter Strasse open for business on April 16.

Demolition of the old clock tower.

On January 1, the city of Wiesbaden acquires the spa facilities from the Prussian treasury for 100,000 thalers.

Gambling is abolished. With foresight, Wiesbaden had already introduced a visitor's tax on April 1, 1870 to compensate for the resulting financial losses.

On August 13, the Jewish community ceremoniously moves into its newly built synagogue on Michelsberg.

The Duchy of Nassau, an ally of Austria in the so-called "German-German War", is annexed by Prussia. In 1867, Wiesbaden becomes the seat of the government president of the newly formed administrative district of Wiesbaden.

After ten years of construction, the Marktkirche is consecrated on November 13; it is the successor to the Mauritiuskirche, which was destroyed by fire in 1850.

The "Declaration of the Nassauers" published in Wiesbaden provides the impetus for the formation of the German National Association in Frankfurt am Main, which advocates German unity under Prussian leadership in the same year.

On January 1, Alexander Pagenstecher founds an ophthalmology clinic that soon gains an international reputation, particularly for cataract operations.

Dedication of the "Greek Chapel - Russian Church" on the Neroberg.

Remigius Fresenius founds a chemical laboratory in Wiesbaden, today's Institut Fresenius in Taunusstein.

The demands of the Nassauers.