Pearl Street and Beyond ~ Trip Advisor's #1 Boulder tour! Fun and informative walking tour with knowledgeable guides weaving together stories of history, planning, people, and policy. Make the most of your time in Boulder! Reservations recommended, tour capacity 12. $18 adults (prepaid), discounts for seniors and children (+$2 walk-ups). ** repeating event Wednesday mornings, starting 6/6 through 9/5