The Old Town Hall (Staroměstská radnice in Czech) is a historic building located in the Old Town Square of Prague, the capital city of the Czech Republic. The Old Town Hall was built in the 14th century and is one of the most significant examples of Gothic architecture in Prague. The building was expanded and modified over the centuries, and it now includes architectural elements from the Renaissance, Baroque, and Rococo periods.

The Old Town Hall consists of a complex of several buildings, including a tower with a famous astronomical clock, a chapel, a council chamber, and several halls. The most recognizable feature of the Old Town Hall is the 70-meter-high tower, which offers panoramic views of the city. The tower was built in the early 15th century and has a Gothic spire and a Baroque clock face. The astronomical clock, which was added to the tower in the 15th century, is a popular tourist attraction and features a complex mechanism that shows the time, phases of the moon, and the movement of the sun and stars.

The Old Town Hall has a rich history and has been the site of many significant events in Czech history. It was the seat of the city government for centuries and played a prominent role in the political and social life of Prague. The building was also the site of the famous defenestration of Prague in 1618, which sparked the Thirty Years' War.

Today, the Old Town Hall is a popular tourist attraction and a symbol of Prague's rich history and cultural heritage. Visitors can explore the various halls and chambers of the building, visit the museum of the history of Prague, and climb the tower to enjoy the panoramic views of the city. The Old Town Hall is also a popular venue for cultural events and concerts.