Mausoleum Derneburg, Pyramid mausoleum in Derneburg, Holle, Germany

The Mausoleum Derneburg is a stepped pyramid of beige Rhät sandstone built in 1839 to a design by Georg Ludwig Friedrich Laves, rising 10.51 metres from a base of 11.8 by 11.71 metres. Its 626 ashlar blocks, up to 2.5 metres long, are laid in 34 courses of 30 centimetres each, and the entrance is cut into the body as an Egyptian-style temple portal with a sloping jamb.

Count Ernst zu Münster commissioned the architect Georg Ludwig Friedrich Laves with the mausoleum in 1839. During his travels through Italy from 1793 to 1798 he had visited ancient tombs, including the 36-metre Cestius Pyramid in Rome on 22 March 1794, which served as an important model. The count died on 20 May 1839 before the pyramid was finished; his remains lay in a vault of the former Derneburg monastery until burial on 19 May 1840. The funeral cost 2048 Taler.

The burial inscription above the entrance reads "Grafl. Münstersches Familien / Begräbnis / erbauet im Jahre MDCCCXXXIX", naming the family tomb and its completion year in Roman numerals. Nine sarcophagi stand inside, among them Count Ernst zu Münster, his wife Wilhelmine Charlotte Princess zu Schaumburg-Lippe (1783–1858) and their daughters. On the surrounding family cemetery, the grave of Lady Muriel Hay (1863–1927) carries a Celtic high cross, recalling her Scottish origin.

Visitors should check accessibility before visiting, as this is a private burial site in a rural area. The location is somewhat remote, so getting local directions or planning your route in advance is helpful.

The pyramid was originally painted red, and its heavy sandstone door yellow; paint traces were found during building surveys. A fragment of that door still lies in the entrance area, which is now closed with iron grilles. The 5.75-metre interior, once coated in dark blue mortar, holds nine sarcophagi.