The Roosna-Alliku Manor was donated to von Rosen family in 1620 by Christina, Queen of Sweden. The coat of arms of family features a white rose, which has become the symbol of the manor. In 1721 it was acquired by von Stackelbergs. The present main building is one of the most impressive examples of early classical manor architecture in Estonia, completed by Otto Friedrich von Stackelberg in 1786. Worthiest of attention in the interior are the two rooms with artificial marble walls. The manor building has been a school since 1924. Visits during the school period are possible by appointment only.
The Church of St Eustace was built between 1532-1632. St Eustace"s is considered a masterpiece of late Gothic architecture. The church’s reputation was strong enough of the time for it to be chosen as the location for a young Louis XIV to receive communion. Mozart also chose the sanctuary as the location for his mother’s funeral. Among those baptised here as children were Richelieu, Jeanne-Antoinette Poisson, future Madame de Pompadour and Molière, who was also married here in the 17th century. The last rites for Anne of Austria, Turenne and Mirabeau were pronounced within its walls. Marie de Gournay is buried there.
The origins of Saint Eustache date back to 13th century. The church became a parish church in 1223, thanks to a man named Jean Alais who achieved this by taxing the baskets of fish sold nearby, as granted by King Philip Augustus. To thank such divine generosity, Alais constructed a chapel dedicated to Sainte-Agnès, a Roman martyr.