Frankenwarte, Historical park on Nikolausberg, Würzburg, Germany

Frankenwarte is a 61-hectare park laid out around 1900 on the Nikolausberg, a hill 359 m high southwest of Würzburg's centre. Its 1894 observation tower stands among several broadcasting masts, including a 125 m steel lattice tower of Bayerischer Rundfunk nicknamed the "little Eiffel Tower". The grounds also hold the Frankenwarte Academy.

The 359-metre Nikolausberg southwest of Würzburg's centre was planted with a 61-hectare park around 1900. The observation tower dates from 1894, not 1893. From 1952 a 111-metre transmission mast stood on the site; it was replaced by a 125-metre steel lattice tower in 2009–2010, and the old mast was demolished by controlled explosion on 31 May 2011.

The site also houses the Akademie Frankenwarte, a conference and education centre. Its grounds and buildings are used for seminars and meetings, so parts of the area serve organised events rather than open park use. The academy shares the hilltop with the park and the broadcasting installations.

Visitors can climb the tower to look out over Würzburg and the surrounding area. The site is accessible on foot and the park grounds are free to explore.

The 125-metre steel lattice tower of Bayerischer Rundfunk, completed in 2010, is nicknamed the "little Eiffel Tower" because of its shape. It replaced a 111-metre mast built in 1952, which was demolished in a controlled explosion on 31 May 2011 at 14:00.