This is the Tøjhusmuseet building itself ...
The first guns of the XV century. Creating such a miracle of military thought was not easy at that time. First, it was necessary to forge iron strips of a wedge-shaped profile and carefully grind them one to another. Then they were red-hot and they shackled a pipe from them, connecting them together by means of forge welding. Secondly, it was necessary to make hoops with a diameter smaller than the barrel, heat them red-hot and put them on the barrel with tension. Separately, it was necessary to make a powder charging chamber, and not one, but the more, the better. Both of these parts had to be exactly one to the other, so that there was no gas breakthrough. The chamber was locked with a wedge. Since the powder looked like sticky flesh, it was quite difficult and dangerous to charge the chambers, but it allowed at least some rate of fire to be provided!
In the XVI century tools already learned to cast copper and even cast iron. Danish-Norwegian 6 pound ship guns.
But this is already 14-pound bronze implements of King Christian IV.

Casting untied the hands of masters, because they cast them in wax forms, and the guns turned into real works of art. Here, for example, a gun molded in 1564 by Matthias Benningcomb in Lübeck for the admiral ship Engle.

Cannon cast in 1687 in Copenhagen by Albert Beenningk (family contract, so to speak,) for Christian IV, King of Denmark and Norway.

Mortar 1692 of the year with the abbreviation of the manufacturing plant.
The guns are now sometimes specially cast to present as a gift. For example, the 27-pound bronze gun of the XVI century, a gift of Christian IV to the Duke of Oldenburg.
This is a rear view tool.
12-pound 1849 field gun of the year with a bronze barrel.
Guns in the XIX century served for a long time. Here is the Danish 24-pound field gun of the 1834 model of the year that participated in the 1864 war of the year.
Danish 12-pound fortress rifle M1862-1863.
Danish 30-pound coastal cannon M1865.
Danish 12-pound fortress rifle M1862-1876.
Danish 150-mm M1887-1924 fortress gun on the field gun carriage.
Danish 190-mm howitzer 1898 of fortress artillery.
Belgian gun 120-mm of the late XIX century.
As you can see, the bolt is already wedge.
Danish 90 mm M1876 field gun.

Danish serf 150-mm gun M1884.
Danish 75-mm field gun of the late 19th century
And, of course, Hotchkiss 37-mm revolving gun on the field gun carriage. Well, as without her ...
At one time, the Model Designer magazine published materials on the battleship Twelve Apostles, the most powerful 68-pound bomb weapons mounted on the lower decks of the ships Paris, Grand Duke Constantine, the Twelve Apostles and the role that they played in the battle of Sinop. But the same Danes at that time already had such, absolutely monstrous, 100-pound (45,4 kg) iron ship howitzers.
Danish rifle ship 84-pound guns with piston bolt.
It's the same: front view.
These “pigs” ...

Danish 150-mm experimental rifled howitzer.
Danish 1887 year of manufacture 170-mm cannon Friedrich Krupp. Without him, of course, there also could not have done ...
And this is its breech under a horizontal wedge-shaped gate.
The Danish 75-mm 1914 ship-firing gun of the year.
So she looks back.
Danish rapid-fire ship 37-mm gun with a shoulder rest 1886 g.
Danish rapid-fire ship 47-mm gun with a shoulder rest 1887 g.
And this is the Swedish-Danish 37-mm anti-tank gun 1938.
The famous French 75-mm field gun M1897 Putoto and Depot. All modern rapid-fire artillery began with her ...
View of her from behind. Needless to say, the gun is preserved in such a quality that even now, charge and shoot!
And this is for comparison the German 77-mm field gun 1896. Neither elegance nor elegance to you.
So she looked back. In principle, wow, but the rate of fire was still lower than that of the “French”, 10 versus 15. Due to the shorter stem, the range was also less.
But here on this design the Germans took revenge: 7,5-cm anti-tank gun M1940.
40 mm ship "pom-pom". The Danes in navy they were too!
Danish 20-mm anti-aircraft machine 1940 g.
The 40-mm Bofors 1936 anti-aircraft machine gun on the installation for onshore fortifications.
The famous German anti-aircraft gun "88" 1936.
The museum also has an impressive collection of mortars. Here is one of them. Mortar of Danish-Norwegian production 1600-1700
Well, and this is a unique exhibit at all - a stove in order to heat the cannonballs for firing at wooden ships. The kernels were laid on top and went down as they were heated, from where they were taken with special tongs. The core had to have a dark cherry color so as not to become too soft.
But this is a cart with the help of which the hot cores were delivered to the guns. In England, a very interesting Hornblower series was filmed about the career of an English naval officer of the era of Admiral Nelson and based on the facts of his own biography. So there in one of the series it is very realistic to show how the cores are heated and they shoot hot-tempered cores at ships. Only here the stove there is different. But anyway - I highly recommend this movie to watch!
Will be in Copenhagen, go to this museum necessarily. There are still many interesting things. It is a pity that behind the glass.