Isaac Synagogue Krakow - History & Visiting Info

Isaac Synagogue on Kupa Street is the largest synagogue in Kazimierz and one of the finest Baroque synagogue buildings in Poland. Completed in 1644, it was funded by Izaak Jakubowicz, a wealthy merchant and banker, and its tall, light-filled prayer hall still carries fragments of painted prayers on the walls. It stands two blocks from Szeroka Street, so it slots easily into any walk through the Jewish quarter.

What it is

Isaac Synagogue is a 17th-century house of prayer at ul. Kupa 18, in the heart of the former Jewish town. Unlike the small and intimate Remuh Synagogue, Isaac was built on a grand scale, with a high barrel-vaulted ceiling, stucco decoration and an arcaded women's gallery. After decades of other uses, the building was returned to the Jewish Community of Krakow, and in recent years it has again hosted regular prayer, so visiting arrangements can vary with religious life.

History in brief

The synagogue was built between 1638 and 1644, after Izaak Jakubowicz obtained royal permission to erect it. A popular legend later attached itself to his name: the story of Isaac, who dreamed of treasure under a bridge in Prague, travelled there, and was told by a guard about a dream of treasure hidden under a stove in Krakow, in Isaac's own house. During the Nazi German occupation the synagogue was plundered and devastated, and its furnishings were destroyed. After the war it served various secular purposes before restoration work recovered the architecture and the surviving wall texts. Today it stands as both a monument and, once again, a place of worship.

What to see

The Baroque prayer hall: one of the tallest synagogue interiors in Poland, with a barrel vault and 17th-century stucco work.
Painted wall prayers: preserved fragments of liturgical texts painted directly on the walls, a rare survival that shows how the interior once looked.
The women's gallery: an arcaded upper gallery reached by an external staircase, characteristic of the period.
The setting: Kupa Street and the surrounding blocks preserve the dense street pattern of the old Jewish town, with the Kupa Synagogue a short walk away.

Practical information

Opening hours and entry fees change with the religious calendar and current use of the building, so check locally or with the Jewish Community of Krakow before you visit. Expect a small admission charge, and expect the synagogue to be closed on Saturdays and Jewish holidays. Most visitors spend 20 to 40 minutes inside. If you plan to see several synagogues in one day, remember that each charges its own entry fee.

Getting there

From the Main Square, walk south toward Kazimierz along Starowiślna or Stradomska; the synagogue is about 1.5 km away, just off Szeroka Street via Jakuba or Kupa. It combines naturally with the Remuh Synagogue and Cemetery and the Old Synagogue museum. If walking between sites is a concern, our Kazimierz electric cart tour covers the quarter with commentary, and our Krakow guide helps you place Kazimierz within a wider itinerary.

Etiquette

This is a religious heritage site that again serves worshippers. Dress modestly, speak quietly, and be prepared for men to be asked to cover their heads. If a service is in progress, wait or return later rather than entering as a sightseer.

Frequently asked questions

Who was Isaac Jakubowicz?

Izaak Jakubowicz was a wealthy Jewish merchant and banker in 17th-century Krakow. He funded the synagogue's construction, completed in 1644, and it has carried his name ever since.

Is Isaac Synagogue open to visitors?

Generally yes, outside Saturdays and Jewish holidays, though hours vary with religious use of the building. Check current opening times locally before you go.

What is the legend of Isaac's treasure?

The folk tale tells of Isaac dreaming of treasure under a bridge in Prague. He travelled there, and a guard mocked him with his own dream of treasure under a stove in Krakow, in the house of one Isaac. Isaac returned home, found the treasure, and funded the synagogue.

How is Isaac Synagogue different from the Remuh Synagogue?

Isaac is the largest synagogue in Kazimierz, built for scale and Baroque grandeur, while Remuh is the smallest and is tied to the historic cemetery beside it. Seeing both gives you two very different faces of the district.