This massive whitewashed cathedral claims to be Colombia's oldest church, but work wasn't actually completed until the end of the 18th century, and thus reflects the influences of various architectural styles. It holds the ashes of the town's founder, Rodrigo de Bastidas (just to the left as you enter the church). Simón Bolívar was buried here in 1830, but in 1842 his remains were taken to Caracas, his birthplace.