Bad Homburg vor der Höhe, Germany

Further digs by the University of Frankfurt at Bad Homburg Castle in April 2006, again initiated by Kurth and managed by Prof. Henning, revealed only a single burnt layer, from a half-timbered building, possibly a castle with towers, which was dated from ceramic finds to the 12th or 13th century. Most likely this building had an association with Wortwin's "castle". A further cultural layer from an even earlier time may lie beneath these remains. Investigations using carbon-14 dating and micromorphological analysis will show whether the dating can be made more precise.

Homberg acquired market rights about 1330, but the document granting these rights is said to have been lost.

The town's name, "Homburg", is derived from the Hohenberg Castle. The suffix "vor der Höhe" was probably first recorded in a document of 1399. The designation Bad was conferred in 1912.

In 1622, Homburg became the capital of the Landgraviate of Hesse-Homburg. The first landgrave of Hessen-Homburg was Friedrich I of Hessen-Homburg. Friedrich II (1680–1708) attained fame as Prince of Homburg. In 1866, as a result of the Austro-Prussian War, Homburg became Prussian territory.

With the beginning of the spa industry in the town in the mid-19th century, Homburg became an internationally famous spa town. Bad Homburg was favoured particularly by Russian nobility.

The spa industry began with the discovery of the Elisabethenbrunnen ("Princess Elizabeth's spring") in 1834. The first spa building and the first casino in Homburg were built in 1841–1842 by the brothers François (1806–1877) and Louis Blanc (1806–1852), who later owned the Monte Carlo Casino. In 1860, the town was connected with Frankfurt by a railway line.

In 1888, Homburg became known throughout the German Empire because Kaiser Wilhelm II made its castle his imperial summer residence. He later financed the building of the Church of the Redeemer (Erlöserkirche) nearby. The emperor's mother also lived there for several years. Edward VII of the United Kingdom was often a guest; it was he who introduced the Homburg hat and turned-up trousers. Edward took fasting cures at Homburg 32 times.

The Bad Homburger Golf Club in the Röderweisen in Dornholzhausen – now part of Bad Homburg – is Germany's oldest golf club. It had its beginnings in the Bad Homburg spa park, where the old clubhouse and even playable parts of the old golf course can still be found.

Not far away stands the Russian Chapel, properly called All Saints' Church, an Eastern Orthodox church whose cornerstone was laid by the Russian imperial couple on 16 October 1896, although they did not attend the church's consecration almost three years later.

King Chulalongkorn of Siam (Thailand) sent a garden pavilion in gratitude for a successful cure. It was erected in 1914.

Horex was a well known German motorcycle brand of the "Horex—Fahrzeugbau AG", founded in 1923 in Bad Homburg by Fritz Kleemann.

In 1335, permission was given by Emperor Louis IV to Gottfried von Eppstein to settle 10 Jews in each of the localities of Eppstein, Homburg, and Steinheim; it is uncertain, however, whether any Jews settled in Homburg at that time. Evidence for the existence of a permanent Jewish settlement in Homburg is found only at the beginning of the 16th century. Until 1600 it consisted of 2 or 3 families, and by 1632 these had increased to 16. The first Jewish cemetery was purchased in the 17th century. The community continued to grow so rapidly that in 1703 the landgrave Frederick II of Hesse decided on the construction of a special Judengasse (Jewish quarter). A synagogue, built in 1731, was replaced by a new one in 1867. The Jewish community of Homburg was originally part of the jurisdiction of the rabbinate of Friedberg but began to appoint its own rabbis in the 19th century.

A Hebrew printing house was located in Homburg by Seligmann ben Hirz Reis from 1710 until 1713, when he relocated to Offenbach am Main. Among other items, he published Jacob ibn Ḥabib's Ein Ya'akov (1712). Hebrew printing was resumed there in 1724 by Samson ben Salman Hanau but lack of capital limited his output. The press was acquired in 1736 by Aaron ben Ẓevi Dessau whose publications included the Shulhan Arukh (Ḥoshen Mishpat) with commentary (1742). The press was sold in 1748 and transferred in 1749 to Roedelheim. At the beginning of the 20th century, the spa of Homburg became a meeting place of Russian-Jewish intellectuals. The Jewish population numbered 604 (7.14% of the total population) in 1865, declining to 379 in 1910 (2.64%), and 300 in 1933. Of the 74 Jews who remained on 17 May 1939, 42 were deported in 1942/1943 to Concentration Camps, never to return.