This extremely old cathedral city on the river Rhine is one of the most important commercial and cultural centers in western Germany. Cologne (Köln in German) is famous over the world for its 12 great Romanesque churches - especially the magnificent Cologne Cathedral - all an easy walk from the historic Old Town, and its university is one of the oldest and largest in Europe. Today, the city remains one of Germany's most important cultural centers, home to numerous arts and entertainment facilities, along with more than 100 galleries and some 36 museums.

 Cologne Cathedral: Near the left bank of the Rhine, Cologne's towering landmark, the Cathedral of St. Peter and St. Mary, is a masterpiece of high gothic architecture. One of the largest cathedrals in Europe, it was started in 1248 and is considered the most ambitious building project of the Middle Ages. As impressive as its 157-meter tall twin towers is the cathedral's incredible interior. Covering an area of 6,166 square meters and boasting 56 pillars, highlights include the 12th-century Reliquary of the Three Kings created by local goldsmiths; the Treasure Chamber with its many precious objects, including ancient reliquaries and manuscripts; and the panoramic views from the south tower, reached by more than 500 steps that pass the cathedral's famous bells.

Cologne's Old Town: As you explore Cologne's numerous historic churches and museums, you'll crisscross the city's lovely Old Town quarters with its many unique charms. In addition to old churches such as Great St. Martin, you'll find yourself traversing countless quaint alleys lined with traditional old houses, many now home to boutique shops, galleries, cafés, and restaurants. And with its many pleasant paths along the Rhine, you'll find ample opportunity to enjoy great views as you plan your route through this ancient city. You'll also find yourself in awe of the countless monuments and fountains that adorn the area, along with its Archeological Zone with its many ancient ruins and artifacts.

The Wallraf-Richartz and Ludwig Museums: Art lovers will want to visit both the Wallraf-Richartz Museum and the Ludwig Museum when in Cologne. Housed in one of the city's newer architectural structures, these two excellent galleries cover a wide range of European painting, with works by Rembrandt, Manet, Renoir, Leibl, Liebermann, and Slevogt.

St. Gereon's Church : Romanesque St. Gereon's is perhaps Cologne's most unusual church. It was built on the site of a former 7th-century church, which was itself constructed on a ten-sided domed structure dating from Roman times (and still visible) beginning in 1151. Dedicated to Saint Gereon, this visually appealing structure includes highlights such as its unusually long choir as well as its numerous medieval murals, mosaics, and ancient relics.

The Old Town Hall: Cologne's Old Town Hall, the Kölner Rathaus, is the oldest public building in Germany. With a rich history dating back more than 900 years as the focal point of the ruling classes during medieval times, the building you see today reflects a number of different architectural influences, including the 14th-century main building, the 15th-century tower, and a Renaissance-style loggia and cloister.

Cologne is known for all these things, but especially Kölsch beer.  A straw-coloured beer with a biscuit flavour and fleeting freshness, it is served in small .21L glasses called stange.  No need to hail the bartender at any bar in this city, beer will continue coming until you place your coaster over your glass.

The city of Tuzla is the administrative center and the economic, cultural and educational center of the Tuzla Canton and the economic-geographic region of northeastern Bosnia. Tuzla is predominantly an industrial city, the center of the municipality of the same name and the Tuzla Canton. It is also the economic, cultural, sports and educational center of northeastern Bosnia and Herzegovina, in the valley of Majevica Mountain.

The city is famous for its chemical and motor industry. It is especially known for the great wealth of salt, after which it got its name (from the Turkish language: "greed" means "so"), and this city lies on a large number of salt mines.

Natural resources and rich deposits of energy and mineral resources have been a determining factor in directing the current economic development of this region, and at the same time are an important backbone of future development.

Tuzla has made its special geological history the oldest or one of the oldest settlements in Europe. Namely, much of Europe, in the ancient geological past, represented the bottom of the Pannonian Sea. And the last remains of this must have receded from the present surface 10 million years ago. Just below Tuzla this sea left a trace of 350 million tons of salty rock and salt water. Salt water was raining to the surface, people were processing it in so still in the neolith. They later formed wells, which became more and more modern, and salt water became the basis of the chemical industry in modern Tuzla.

On July 18, 2003, local authorities decided to draw a large amount of salt water to the surface, to the previously prepared bottom, so Tuzla is now the only city in Europe that has a salt lake and the only city in the world whose salt lake is at the same time a bathing place and beach in the narrowest historical city center. The salt water of the Pannonian Lake is allegedly and healing.

Tuzla has a great industrial tradition, based on rich salt and coal deposits.

Today Tuzla is a city of new energy, in recent years it has experienced a great expansion of construction and rapid development.