 The Karlsruhe Palace ("Schloss") is an interesting piece of architecture; the adjacent "Schlossgarten" includes the Botanical Garden with a palm, cactus and orchid house, and walking paths through the woods to the north.The so-called "Kleine Kirche" (Little Church), built between 1773 and 1776, is the oldest church of Karlsruhe's city centre.The architect Friedrich Weinbrenner designed many of the city's most important sights.