Places to visit in Taipei: the Control Yuan (監察院)

The Control Yuan is one of the branches of the Taiwanese government. It's duty is to audit the other branches of government to make sure that there is no corruption. The building that houses the Control Yuan was built back when Taiwan was under Japanese rule. It is the most intact example of baroque style architecture in Taiwan. 
 
The Control Yuan is in downtown Taipei, so it is really easy to stop by (3-5 min walking from the Taipei train station), and there are lots of other places to go to within walking distance. To get a tour of the building, you can either make a reservation through their website or go on Fridays (9am-12pm, 2pm-5pm) when it is open to the public without advanced reservations. I can't find an English version of their reservation page, so I would suggest going on Fridays if you have problems navigating the page. They do seem to have English tours available if you go the reservation route. Note that if you go on Fridays, you still need to bring a passport or resident I.D. card. Since the building is not that big, I'd even recommend just walking around on the street and looking at it from the outside without going through the trouble of getting a tour unless you really want to. There's also a convenient pedestrian overpass across the street where you can get a nice view of the entire building.

 Here's a link to Google maps for the Control Yuan: