The negative first: The construction site at the castle is not progressing. You have to "feel" entering the construction site (unless you are familiar with the area). The museum could be better advertised and signposted here. On the other hand, typical university. The positive: the SHKs who work there are very friendly, try to identify stones and don't let themselves be disturbed by asking children. The museum is small, but extremely well stocked. Despite destruction during the war (see a small display case). You see different stones/minerals/metals, different cuts, oddities and a little bit of education about what just ends up in the trash (if not recycled properly). There is a guest book and a "children's corner" with a children's guest book (with pens) and books to look at. So you can definitely spend more time here than just “walking through”. My suggestion would be that there is a folding stool for little guests. Spoiler: There are three things to try. Three metals of the same size with different weights (densities) to lift. A small opportunity to scratch wanted. And four boxes to feel and then look at. If you want to spend money: You can buy stones (metals) and smaller books, but only in cash. No EC payment/credit card. Only partially recommended for wheelchair users because many display cases are higher. There is a small metal ramp at the entrance. No toilets for handicapped people, although they are clean, they are old-fashioned and cramped.

Very interesting and educational museum. Entrance fee: 2.50 euros

A small but nice museum in which you can easily lose yourself for 2 hours.

This museum is quite bizarre. In Poppelsdorf Castle there are three rooms in which minerals are exhibited, lovingly arranged and labeled in great detail. Everything there is. By the way, a few panels on volcanism, artificial crystals and crystal cultivation, a tiger's eye from Australia and more. Apart from me, there were perhaps two people in this museum during the entire time, which is no surprise, as the opening hours really don't invite you to come. I think three times a week, 3 hours each time. The entrance fee is very moderate (2.50 EUR). A student assistant (presumably) was manning the cash register.

Small but mighty! Lots of beautiful minerals. There is also a room that shows and explains minerals in industrial processing.

Просто в восторге от разнообразия минералов. Очень интересная была выставка о применении минералов в жизни человека. Также показали выращивание искусственных камней в лабораторных условиях.

Very nice and calm museum the staff is very nice and does speak English! 100% would recommend!

Excellent collection of Rocks and Minerals . Very exciting and learning experience for kids . You can buy a souvenir also from the museum .

It's just ok because 1.50 isn't worth it

A well-stocked exhibition. Also offer events for children. We recommend!

I recommend museum if you are stones lover

I'm excited. Minerals from all over the world are on display. Many minerals are shown not only in their original form, but also in facet cut. You can find a lot of very interesting information. A visit is very worthwhile. The surrounding area is also worth seeing. The museum is located in Poppelsdorf Castle, whose park also includes the botanical garden.

A fine collection of crystals and also some meteorites. The subject of the last room are materials, and how and where they are used in industrial applications. The entrance fee is 2,50 Euro.

(Translated by Google) Super interesting museum with very nice employees. (Original) Super interessantes Museum mit sehr netten Mitarbeiterinnen.

(Translated by Google) So great! Diverse crystal treasures. Can you spend nice time. (Original) Sehr toll! Vielfältige Kristall schätze. Kann man schöne Zeit verbringen.

(Translated by Google) Super nice guide for our kids group. Anytime again, if you have an interested children's group (Original) Super nette Führung für unsere Kindergruppe. Jederzeit wieder gerne, wenn man eine interessierte Kindergruppe hat

Huge selection of minerals.