Hehuan Mountain (aka Hehuanshan or Mt. Hehuan) may be the most popular place to see snow in Taiwan, partly due to the fact that it has the highest public road in the country (located at Wuling (武嶺). Most people in Taiwan live at or near sea level in a tropical/subtropical environment that never has snow. However, it does snow in Taiwan at many places with higher elevations, such as Yangmingshan, Jade Mountain, Alishan, Snow Mountain, etc. If temperatures get low enough between December and February, snow is possible to fall wherever the elevation is high enough in Taiwan. However places like Hehuanshan are special because you can drive a vehicle right to the top.

Background:
Hehuanshan lies at the edge of Taroko National Park on the border of Nantou and Hualien Counties. The road from Nantou to Taroko Gorge passes through the saddle on Hehuanshan between the the East Peak and Main Peak, and is the highest accessible public road in Taiwan (also known as Wuling 武嶺).
Near this place, the Wushe incident and Taroko War took place (see below for more details).
During the Martial Law period in Taiwan, a ski lift ran on the mountain, but has since been abandoned due to lack of consistent snowfall.
The Taiwan military also has its winter training grounds near the mountain. 
Recently Hehuanshan has been a popular place for hiking and taking photos, and has been an Instagram hot spot.

Hours: 24/7 unless otherwise closed by the department of transportation

When to Go:
It snows on Hehuanshan usually December to February. 
​You can check the current weather for Hehuanshan here and live video feed of the mountain and ground conditions here.

Price: Free

How to Get There: Take provincial highway 14 from Puli, and keep going after your reach Qingjing Farm.
Alos you can take Provincial Highway 8 from Taroko Gorge National Park.
Stop when you reach the very top of the road, the Wuling parking lot.

Traffic Control: Buses and large truck are not allowed. Sometimes chains are required (no one has chains in Taiwan).

Map: Please see below:

Sun Moon Lake is a beautiful scenic area in Taiwan and a popular tourist destination. Besides the lakeside scenery, one can also enjoy boat rides, Taiwanese street food, gift shops, temples, a gondola, aborigine theme park, and more. It is for sure a must-see destination for anyone coming to vacation in Taiwan.

We have visited Sun Moon Lake a total of 6 times over 7 years, using 3 different cameras and 3 cell phone cameras, in luckily mostly good weather. In the blog below I will stitch together all of these trips in a way that hopefully makes sense. It may not be the most ultimate guide ever but it has most of the major sites in it.

Background:
Sun Moon Lake (aka Zintun in local Thao language) is the largest natural lake in Taiwan and home of the aboriginal Thao tribe. According to legend, a white deer led the tribe to the lake, and is now trapped in a marble stone on Lalu Island, which is sacred ground to them. 
The name "Sun Moon Lake" comes from the different colors of the water in the lake, some of it being murky and on other parts of the lake, clear. Another account says that the name comes from parts of the lake being round like the sun, and other parts of the lake being curved like the moon. 
The first hydroelectric plant was built on the lake in 1919 by the Japanese, which was later taken over by the ROC government. The hydroelectric power is part of a system of hdro power plants running from Wushe to Sun Moon Lake down to Shuili Township, and includes at least 8 plants.
Sun Moon Lake Scenic area was created in 2000. The lake attracts visitors from around the world from year round for its beauty and surrounding sights, and is also known for the annual Sun Moon Lake Swimming Carnival which thousands of people attend each year.

How to Get There:
Bus: There are buses (Ubus/Kbus/etc) that leave all day from Taichung Station. 
By Car: Take National Highway 6 from Taichung up to Puli, and then follow the signs on highway 21 down to Sun Moon Lake. You can also take a car/scooter up highway 21 up from Shuili Township further south. 
Boat: You can circle the lake via three spots: Shuise Pier, Xuanguang Pier, and Ita Thao Pier.

Price:
Scenic Area Entrance: Free
Parking: Around 100 NT per day for cars
Boat Ride: 300 NT per person
Gondola Ride (Ropeway): 300 NT per person
Formosan Aboriginal Cultural Village: 850 NT per person

Hours:
Scenic Area: 24/7
Parking: 24/7
Boat Ride: roughly 9:00 AM - 5:00 PM every day
Gondola Ride: 10:30 AM - 4:00 PM every day
Formosan Aboriginal Cultural Village: 9:30 AM- 5 PM every day

Map: Please see below: