during the Festival of San Fermín, brave (or perhaps foolhardy) souls participate in the "Running of the Bulls." Participants dash through the narrow streets of Pamplona while being chased by a herd of charging bulls.
Beneath the romantic streets of Paris lie the Catacombs, a labyrinth of underground tunnels filled with the skulls and bones of approximately six million people.
Each year in the town of Buñol, participants engage in the world's largest tomato fight. Thousands of people gather to pelt each other with ripe tomatoes, turning the streets into a sea of red pulp.
Burning Man is an annual event where tens of thousands of participants gather in the Nevada desert to create a temporary city.
In the small Italian village of Rocca Canterano, residents don horned helmets and engage in a traditional ritual called the "Corsa dei Ceri." Participants carry heavy, elaborately decorated wooden structures through narrow streets at breakneck speeds.