Teams use smartphones and calls to friends to decode clues that lead to race checkpoints, where they snap photos and complete dares

Historians and clairvoyant experts guide tours past haunted sites of the Old City in search of ghosts and paranormal activity

Organizers send scavenger-hunt clues by smartphone; top-scoring team takes home $250

Text-message clues, trivia, and riddles lead explorers through Philadelphia's rich history

Info-rich guides whisk guests through Historic District and Old City neighborhood, where they’ll see Independence Hall & Liberty Bell

Text-message clues, trivia, and riddles lead explorers through Philadelphia's rich history

Learned historians guide two-hour R-rated tour past sites of gangster and serial murders while divulging chilling facts and stories.

Double-decker bus hits 21 stops in 2 days including shopping districts & America’s 1st zoo or guests set off on foot to Independence Hall

Margaritas & Coronas are discounted at pubs throughout Philadelphia during holiday bar crawl with kickoff party & Kentucky Derby viewing

Text-message clues, trivia & riddles lead explorers through 18th-century alleyways, Founding Father hangouts & cheesesteak stands