The Tower Trail is accessible from the Visitor Center. To access Devils Tower, visitors traveling east on I-90 exit at Moorcroft, WY. Visitors traveling west on I-90 use any of three Sundance, WY exits. From Moorcroft or Sundance, take 14 north to 24, take 24 north to Devils Tower. From 24, turn west onto 110. The Visitor Center is located at the end of 110.