The Heiliggeistkirche was built by Niklaus Schiltknecht, the town's master mason, and inaugurated in 1729. It is located on the site of what was previously known as the hospital church. The Heiliggeistkirche is considered to be the most beautiful Protestant baroque church in Switzerland. Richly furnished, the interior is dominated by fourteen freestanding sandstone columns and the pulpit in the northern part of the nave.