Trongsa is about a four-hour drive from Wangduephodrang and is right in the middle of Bhutan. It's the ancestral home of the royal family, and both the first and second king ruled the country from here. Aside from the breathtaking scenery, the most notable feature in Trongsa is the Trongsa Dzong, which is thought to be the most impressive dzong in Bhutan. Because of its enormity, it can be seen from a great distance, and its interior is multilevel and contains numerous corridors and temples. Above the dzong is the watchtower, which houses two interesting