This late-Gothic, triple-nave church has its origins in 1250 but was only completed with the extension of the bell tower in 1566. Its exterior is encrusted with 17th- and 18th-century houses and the barnlike interior was stripped of all its adornment in the Alteration of 1578. Rembrandt’s beloved first wife lies in vault 28K, which bears the simple inscription “Saskia Juni 1642.” The magnificent 1728 organ is regularly used for recitals. You can take a guided tour up the church tower between 1 and 5pm on Thursday to Saturday from April through September for fantastic views across the rooftops, canals, and spires of Amsterdam and the Red Light District.