1. Beitou Hot Springs
Taipei has a volcanic hot spring district built right into its public transit system, and that fact alone makes Beitou unusual. Take the MRT to Xinbeitou Station and you are immediately in a neighborhood where sulfurous steam drifts from drains and the smell of minerals hangs in the air. The springs here draw from the Datun volcano group, producing three distinct water types: green sulfur (acidic, at Thermal Valley), white sulfur, and iron-rich springs. Thermal Valley, the most dramatic spot, reaches temperatures above 80 degrees Celsius. You cannot bathe in it, but standing on the viewing platform and watching the green water churn is eerie. For actual soaking, the public outdoor Millennium Hot Spring charges around NT$40 (roughly USD 1.30) and has several pools at different temperatures. Private bathhouses along the valley road range from budget to luxury. One MRT ride transports you from skyscrapers to a landscape of steam, old Japanese-era buildings, and forested hillsides. Visit the Beitou Hot Spring Museum nearby (closed Mondays) to see the Japanese colonial bathhouse that started it all. The whole area pairs well with a hike up to Yangmingshan, which sits just above.