What is Helios located near that would qualify as the 33rd most visited tourist attraction in the world?
Helios (building):  It is located at the intersection of 2nd Avenue and Pine Street near the Pike Place Market and the city's retail core. Pike Place Market:  With more than 10 million visitors annually, Pike Place Market is Seattle's most popular tourist destination and is the 33rd most visited tourist attraction in the world.
Pike Place Market