sentence1: Boudhanath, 6 km (4 miles) northeast of the city center, is the valley's second important stupa and is similar in many ways to Swayambhunath.
sentence2: Boudhanath, 6 km (4 miles) northeast of the city center, is the valley's second important stupa and is similar in many ways to Swayambhunath in that they are both underrated. 