쾰른‬에서 가장 멋진 ‪13‬개의 동굴

"One of the last remaining towers of Cologne's city wall... In the 13th century, Cologne possessed the largest city fortifications in the Holy Roman Empire, with its 7,000-meter-long ring of walls, twelve gates, and numerous towers. The city wall—built between 1200 and 1250 from Rhenish trachyte, tuff, and basalt—encircled the city in a semicircle, with the Rhine forming its eastern boundary. In 1881, for a city expansion, the walls were demolished, leaving only a few remnants, and eight of the twelve gates were torn down." https://www.denkmalschutz.de/denkmal/ulrepforte.html

You can even get married here

The listed Isenburg Castle complex exhibits the typical features of a moated castle. Unfortunately, the current structure no longer dates back to the time of its construction.

In the inner courtyard there is an abstract sculpture group by the sculptor Ansgar Nierhof.

The Ulrepforte is part of the medieval city wall, https://de.wikipedia.org/wiki/Ulrepforte

When you look at the gate, you can imagine what's hidden behind it, because unfortunately you can't get in. Although I don't think everyone can appreciate its beauty.

The castle can only be viewed from the outside. At the entrance to the property there is a sign indicating that it is private property and not open to the public. However, the views you can catch from the gate of the castle and the castle garden are very beautiful.

The city wall of Cologne was a fortification built in several construction phases over centuries. The first phase was built between the late 1st and 3rd centuries for the square "Colonia Claudia Ara Agrippinensium" of the Romans. Another semicircular line of fortifications was built in the Middle Ages and made Cologne the most powerful fortress city north of the Alps. The city wall was 9 km long and had 12 city gates - a number that was deliberately chosen to symbolize the connection to the city of Jerusalem, whose city wall also had 12 city gates. Today, remnants of the city wall and defensive towers are still preserved. For example, the Severinstorburg, also called "Porta Severini" in the Middle Ages, later Severinstor, is one of four surviving city gate castles of the medieval city wall of Cologne. This is where the Cologne Rose Monday procession traditionally starts. Source: https://www.koelntourismus.de/kunst-kultur/sehenswuerdigkeiten/detail/severinstorburg