The Old Stone Church is a Romanesque Revival Presbyterian church on the north side of Public Square, completed in 1855 and the oldest surviving building on the square. The exterior is austere — heavy stone, twin towers added later — but the interior is a surprise: a deep arched nave lit by stained-glass windows from Louis Comfort Tiffany and Charles Connick, and a coffered wooden ceiling restored after fires in 1857 and 1884.
The congregation has continuously occupied the building since the church was founded in 1820, making it Cleveland's oldest active religious community. Lunchtime concerts on the church's organ are regularly held in the warm months.
Admission free; check the website for opening hours, which vary outside Sunday services.