This is an incredible bit of urban green space. The grounds are terraced like a hanging garden replete with waterfalls, sandstone terraces and assorted embellishments that feel almost Tuscan. The prettiest bits reside in the park's south end, including – wait for it – DC's only memorial to James Buchanan (the USA's 15th president). Many locals still call this Malcolm X Park from its days of hosting political rallies. The Sunday drum circle (from 3pm to 9pm) has been going on for 50 years.