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The Basilica Palais in fall.
© Trier Tourismus und Marketing GmbH

Konstantin-Basilika - Imperial Throne Room

The Basilika was the throne room of Emperor Constantine. It was built in AD 310 and is the largest single room to survive from ancient times, not supported by columns.

Its size is significant: 27 m (90 ft) wide, 33 m (108 ft) high, and 67 m (220 ft) long - with an adjoining hall outside of 75 m (250 ft). This depth is magnified by an optical illusion - both the windows of the apse as well as the niches underneath become progressively smaller towards the middle, thus enhancing the impression of length.

Nave of the Constantin Basilica – © Zairon / Wikimedia Foundation
Nave of the Constantin Basilica – © Zairon / Wikimedia Foundation

Later on, the archbishop used it as his administrative centre and three palace wings were added after 1614. Since the middle of the 19th century, it has been celebrated as the first and oldest Protestant church in Catholic Trier with a splendid organ which utilises a seven-second echo.


Konstantin-Basilika - Imperial Throne Room


Check here the opening hours.
Note: During the services and concerts it is not possible to visit the churches.


Free admission.