Next to the church lies a building that houses a museum of religious art, where one can admire, among other things, objects related to the history of the Three Hierarchs Monastery. This building is also known as the Gothic Hall, and from the very beginning, it had an unusual story: it served as a refectory for the Three Holy Hierarchs Monastery (1635-1639), as well as a chapel (19^th century).

The name "Gothic" is justified not by its external architecture, but by its interior ogival vaults framed by stone ribs. This adjacent building is also remarkable for its outside balcony with 12 cylinder-like stone columns and a Roman tower at the entrance built during the general restoration of the monastery (1890), which was meant to replace the high bell tower that had been demolished. The current appearance of the church is due to the 1960 restoration works. The west wing of the building accommodates the Elder’s office and a few cells.

The cells of the Three Hierarchs Monastery have witnessed many crucial events for the Romanian education and culture. The first printing press in Moldavia was set up here in 1640; it was used for printing the Romanian Cazania (Homiliary) by Metropolitan Varlaam, his comprehensive treatise on The Seven Sacraments of the Church, the Answer to Calvin’s Catechism, as well as Vasile Lupu’s Pravila (Law Code), the first Moldavian law anthology.

During the same period of time, Prince Vasile Lupu laid the foundation of the "Schola Basiliana", the very first Romanian educational institution in Moldavia, organized according to the model of the Kiev Academy. By the end of the 19^th century, the "Schola Basiliana" was still functioning in the cells of the Three Hierarchs Monastery, under the name of Vasile Lupu Preparatory School (for the education of schoolmasters). In 1874, the great Romanian poet Mihai Eminescu was a member of the examining jury of this school; he lived for a while in one of the Monastery’s cells.

Beyond the main goal for which it had been built, the Gothic Hall reminds us of at least two crucial events in the history of the Monastery. First of all, it is here that in 1642 took place the pan-Orthodox theological debates that were concluded by the adoption of the Confession of Orthodox Faith written by Petru Movila, Metropolitan of Kiev. This event was recorded in history under the name of the Synod of Iasi. Two centuries later, in 1888, the chapel situated in the Gothic Hall, temporarily hosting Saint Paraskeve’s reliquary, witnessed the most amazing and best-known miracle worked by the Saint: her relics remained untouched by the great fire that wrought havoc during the night of December 26/December 27, although everything else around burned down.

For decades, the Gothic Hall has been housing objects pertaining to our historical and ecclesiastical patrimony, and since the 15^th of October 2001, it has been welcoming its visitors with a new appearance and a new organisation of the items on display, as the old collection was completed with other pieces, recently brought.

Obviously, the most valuable objects are those directly related to the Three Holy Hierarchs church during the rule of Vasile Lupu, its founder (1635-1653).

Thus, fresco fragments from the original painting made by Russian icon painters show the exquisite artistic sensitivity with which the church was painted. Impressed with it, an observer of the time is recorded to have said: "such miniature painting, done with so much charm, as that on the arches and the arcades of the two vaults of this church, I have not seen in any other country so far" (Evlia Celebi, Turkish voyager). One of the most valuable paintings is the votive painting representing Vasile Lupu and his family. The Royal Icon of the Three Holy Hierarchs is a singular proof of the beauty of the iconostasis made in Moskow in 1639. Other precious objects that illustrate Vasile Lupu’s time are the remarkable embroidered epitaphions representing Lady Tudosca, the Prince’s spouse, and their son, Prince Ioan. These pieces of artistic work have been traditionally attributed to Lady Tudosca herself. An embroidered epitrachelion and two cups made of gold plated silver are among the objects offered by the founder Vasile Lupu to his church. The collection of the museum could not be complete without a copy of the first book in Moldavia printed in Romanian, the Cazania (Homiliary) of Varlaam, Metropolitan of Moldavia, a linguistic monument that was printed in the cells of the Monastery (1643).

The Gothic Hall museum is dedicated to the art and ecclesiastical history in the 17^th and 19^th century Moldavia, and it aims to be a living place that could help us better understand our national the past. It hosts temporary exhibits and it invites visitors to enter a space where the mystery of the past reveals itself and gives them the key to a future when beauty could save the world.