Villa Lilienberg, Heritage villa in Ermatingen, Switzerland.

Villa Lilienberg is a late Neoclassical villa built in 1839/40 on a gentle hill between the Seerücken ridge and the Untersee, opposite the island of Reichenau. The main house is accompanied by an economy building added in 1846 for a coach house and stables, and by a park with a fountain, a pavilion on raised ground and sculptures, among them works by Hermann Haller.

The house was built around 1840 by Prussian Baroness Caroline von Waldau and passed to Baroness Betty von Fingerlin in 1848. It changed hands several times over the following decades until becoming a business education center.

The name Lilienberg refers to the hill site above the Untersee. Since spring 1989 the villa has hosted around 50 annual events of the Lilienberg Unternehmerforum foundation, where business figures meet for conferences, colloquia and multi-day seminars; it also operates as a hotel with restaurant and as a seminar and event venue.

The property is situated in a rural area outside the town center, so arriving by car is advisable or checking accessibility information in advance. As an events venue, it is best experienced by attending an organized activity or scheduled gathering.

The villa's park was enlarged by art collector Oskar Reinhart, who added a pavilion on raised ground, a fountain and sculptures, including works by Hermann Haller. The grounds thus reflect two collector brothers: Werner Reinhart, who restored the house, and Oskar, who shaped the garden.