Located north of Abuja on the road to Kaduna, Zuma Rock is a must-see tourist attraction in Nigeria. One of Africa's Seven Natural Wonders, this giant monolith - standing 2,400 feet (725m) tall, and with a circumference of 1.9 miles (3.2km) - is nothing less than a national symbol, being featured on the 100 Naira bill. Imposing and austere, Zuma Rock is an unbelievable sight, an improbably huge chunk of rock that - locals insist - bears the image of a human face on its surface, as evidence of its mysterious powers. Unfortunately, there aren't that many tourist amenities set up around Zuma Rock as of yet - these are currently being developed, and will include an interpretive centre and a luxury resort.