Formerly the private estate of a feudal lord and then of the Imperial family, this is considered one of the most important parks of the Meiji Era. It's wonderful for strolling because of the variety of its planted gardens; styles range from French and English to Japanese traditional. This place amazes me every time I come here. The park's 58 hectares (143 acres) make it one of the city's largest, and each bend in the pathway brings something completely different: Ponds and sculpted bushes give way to a promenade lined with sycamores that opens onto a rose garden. Cherry blossoms, azaleas, chrysanthemums, and other flowers provide splashes of color from spring through autumn. The Japanese garden, buried in the center, is exquisite; if you have time only for a quick look at traditional landscaping, you won't be disappointed here. There are also wide grassy expanses, popular for picnics and playing, and a greenhouse filled with tropical plants (closed for renovation until 2011). You could easily spend a half-day of leisure here, but for a quick fix of rejuvenation, 1 1/2 hours will do.