Chapels are not large buildings, rectangular and polygonal in plan. The majority of them is of folk architecture. Just like in churches, the main facade of rectangular chapels on the top is terminated by a triangular shield above which there is a small tower. The towers of some chapels „grows out“ of a trapezial shield, the front wall matching the plane of the shield. In the 18th century Samogitian chapels with hipped roofs were built, the main facade of which was terminated by the slope of the roof. Chapels with hipped roofs and a wide rooflet extending along the main facade became very popular in the district of Joniskis.

In the architecture of some folk chapels there are single style forms: small towers bearing the silhouette of Baroque, windows with semicircular and sharp-pointed lintels etc.

There was a small number of rectangular chapels influenced directly by the styles. These chapels followed the examples of the churches of the epoch of Baroque, classicism, Romanticism and Historicism. In the architecture of the chapels the spread of which began in the epoch of classicism four-columned porticoes are dominant. In Lithuania, a new change in chapels with transformed porticoes is found. In front of theese chapels the plain choir wall with a pediment rests on four low columns.

The interiors of chapels are simple and of folk-style. Altars are not large. They are simple, sometimes, painted illusively.

Polygonal chapels: hexagonal and octagonal ones have widely spread in Lithuania. Some part of octagonal chapels is of a prolonged plan.

Since the 17th century ensembles of chapels, the so-called Calvaries have been erected. Distinctive specimens of the Calvary ensemble are in Berzoras and in Zemaiciu Kalvarija.

The architecture of chapels is even more conservative than that of churches. Not many traditional solutions with different variations have been developed by it. Chapels are more primitive than churches. The influence of the styles has been less reflected in their composition, though the local distinctive features have been more expressed.