The church's pipe organ was originally made by Lambert Daniel Kastens and installed in 1738, and the façade remains in place today.

The current pulpit was installed in 1662 and was carved by Abel Schrøder and stands in the natural colour of its oak, except for the king and queen's monograms and crowns which are gilded.

It stands from floor to ceiling, and depicts Christian history from Moses holding the basket up to Jesus Christ.

A white marble font was installed in 1756, created by Carl Frederik Stanley in classicist style, but is no longer in the church.

The new baptismal font from 1872 was made by the sculptor Evens by Ludvig Fenger's design, in black marble and sandstone.

The actual forge was hidden behind a taller building, called the tower, which was given a handsome front in Italian style facing the castle, and which was erected by Peter de Dunckers.

In 1617, Christian IV of Denmark built houses for the navy's personnel between the Church of Saint Nikolaj and Holmen.

This created an influx in population which made it necessary to build a larger church, which the king had set up in the former anchor forge.

This spire has caused significant problems over the years, as the wooden construction of the roof was not strong enough to carry the weight.

When Roskilde Cathedral was renovated, Christian IV of Denmark's portal from 1635 was transferred to the eastern gable of the Holmen Church.