The L'Huillier-Coburg Palace in Edelény was built by Ferenc János L'Huillier, who was born in Alsace-Lorraine. It is the seventh-largest palace in Hungary. Built between 1716 and 1730, it is this country’s pre-eminent example of early-baroque architecture. The palace is U-shaped, with a three-storeyed, flat-roofed central wing - flanked by cylindrical towers at the corners - and two single-storeyed, mansard roofed, side wings. The central wing overlooks the front courtyard, which is surrounded by single-storey ancillary buildings, and access to which is provided through a large-sized, finely-wrought iron gate, bearing a coat-of-arms. The courtyard contains a few trees and some trimmed hedges.

As an unusual solution, the open-end of the U-shaped building was faced towards the park, and the ancillary buildings, which formed an arch, were built-on to the two side-wings - thus enclosing two formal courtyards. The axis of the large hall can be projected across the entrance courtyard, and along the full length of the park. Rococo style wall paintings, which have survived from the 1760’s, can be seen in the palace’s seven rooms. The master-painter responsible for the work was Ferenc Lieb from Igló.
The palace-complex was erected on a small island formed by the Bódva River, and its backwater branch, the Holt Bódva. It was once surrounded by a French-style baroque garden. There are layouts of this garden and plans and elevations of the buildings, as they were in the 18th century, still in existence. Reconstructions in 1910 significantly changed the original appearance of the palace.
The presence of the river has been successfully integrated into the layout of the 15 Ha park, which belongs to the palace. From the bridge which crosses the river, a straight road leads directly to the palace. On its left-hand side, it passes a small, baroque, 18th century sepulchral chapel, with a semi-circular chancel; this is the only historic garden feature still left in the park. Behind the palace, part of the park has made way for the town’s sportsgrounds.
After 1945, a number of institutions took up residence in the palace – the Public Prosecutor’s Office, a day-nursery, an old people’s home etc. In 2001 the National Trust for Historic Monuments assumed control of the palace.

The Borsodi earthen fortification served as one of the most important strategic centres of the Hungarian Conquerors, up to the time of the Tartar invasion. There are dwellings located on the circular earthen mound, as well as a baroque style Calvinist church built at the end of the 18th century. Walking around the hill-top, one can look down upon the skeletal layout of the fortification, noting the boundaries of the mounds and the exits cut into the earth.

Located in the vicinity of the fortification, the Borsod House of Regional Folk Art has several small exhibitions on display, featuring rural dwelling culture, a typical lesser nobility’s “clean room”, examples of lace, etc. The building at one time belonged to the Szathmáry and Horkay families.
The present Gothic style Calvinist church in Edelény was originally raised by the Catholics in 1330, but taken-over by the Calvinists in 1580. A stone tower was erected in front of its western façade in 1696.