Most of the interior decorations were created between 1765 and 1768 when a sculptor from Berlin Johann Michael Graff, and Italian painters from St. Petersburg Francesco Martini and Carlo Zucchi worked at the palace.
The representation rooms in the eastern wing of the palace – the Gilt Hall, the White Hall, and the Great Gallery – are open to the public. The central block accommodates the Duke's suite with reception parlours and private rooms, and the eastern block – a fully restored suite of Duchess's rooms.
A Baroque palace cannot be imagined without the French garden, an elaborate architectural framework devised of green plantings that should manifest the triumph of art over nature. The park spreads out to the south of the palace, and Bartolomeo Rastrelli designed it together with the palace building. An artificial canal runs around the park, encircling also the palace and the stables. Although Rundāle's formal garden is but 10 ha large, Rastrelli has managed to fill it with an intricate maze of allées, cross paths, pergolas and bosquets.
In front of the palace, Rastrelli's design envisaged three fountains which did not work in the 18th century; instead of them there were water basins. The central pool is enclosed by four ornamental parterres, reconstructed after Rastrelli's design, and consisting of surfaces covered with chips of brick and white marble, and lawn, all edged in trimmed boxwood hedging. The bosquets feature an impressive, almost one hectare large, rose garden that spreads on both sides of the parterres. The garden reflects the history of cultivating roses in Europe from the early 18th century till these days.
A "green amphitheatre" has been set up in one of the bosquets, following Rastrelli's original design and the still remaining relief shapes. The venue was launched on 11 July 2004 with the performance of Georg Friedrich Händel's opera, Rinaldo.
A Versaille of Courland was created on the quiet Zemgale estate, and its significance has far outgrown the borders of Zemgale and Latvia.
The Rundāle Palace Museum works as a centre for research into Latvia's history, through creating collections, arranging exhibitions and producing publications.
The exhibition halls display applied art, fine art and historical expositions; the palace hosts the Early Music Festival and recitals of classical music.
The regular French style park with its rose garden, the Green Theatre, ornamental parterres and the fountain, are open for the public. In summers, the park becomes the venue for the Garden Festival.
The Rundāle Palace Museum offers the following services:
- Official receptions, balls and concerts in the state halls of the palace - the Gilt Hall, the White Hall, and the Great Gallery
- Wedding ceremonies, with the first waltz in the White Hall
The garden and the Green Theatre may host various functions:
- theatrical and operatic performances
- shooting films and videos