Eppstein lies west of Frankfurt am Main, around 12 km north east of the state capital Wiesbaden, and is at the edge of the Taunus mountains.

Bremthal was founded by the Lords of Eppstein in the 10th/11th century because the narrow valley around their castle did not allow for arable land.

Niederjosbach has a rapid-transit railway stop on line S2 as well as a bus connection to the Wiesbadener transportation network.

A number of mills (e.g. for grinding grain, dye-making, leather-tanning, and iron extraction) made use of the stream that runs through the town.

The sunny hillside of Vockenhausen is home to many families and Eppstein's elementary and middle schools; the valley has a number of traditional German, as well as Greek, Italian, and Chinese restaurants, a few bakeries, guest houses, hair salons, doctors' offices, a tanning and waxing salon, drugstores, dry cleaners/post office, and local grocery stores.

In 2004 Ehlhalten competed in the final of the series "Dolles Dorf" on hr television, winning a third prize in this show about villages in Hesse.

Eppstein station is on the Main-Lahn Railway and is served by line S 2 of the Rhine-Main S-Bahn, running between Niedernhausen and Dietzenbach via Frankfurt and the town is around 3 km from the A3 Autobahn.

The school is known for a tragic attack: on 3 June 1983 a man shot three children, one teacher and a police officer dead.

The museum contains baroque altar in the back, which Eppstein's Catholics acquired when they used the building as their chapel after the valley church (Talkirche) became Protestant during the Reformation.

At the foot of the castle, in the middle of the historical old city, is the Talkirche (Valley Church), which today accommodates Eppstein's evangelical parish.

The Villa Anna, above the train station, was built in the 1880s by the wealthy Frankfurt businessman Alfred von Neufville.

The "Pionier-Tempel," an iron structure, earlier nicknamed the "omnibus" or "tram temple," is a five-minute walk from the train station.

In four days, 500 men cut the forest path between the Eppstein train station and Wildsachsen for the transport of timber.

When they finished, in keeping with the late 18th-century English tradition of landscape gardens dotted by gazebos and observation points, they built the scenic overlook.

The Kaisertempel with its Doric columns was built in 1894 as a memorial to commemorate the Prussian victory in the Franco-Prussian War (1870/71), which unified the German Empire under King Wilhelm I of Prussia.

The annual bicycle race Rund um den Henninger-Turm (around the Henninger tower) runs through Eppstein, on the first of May each year.