Ujjain & Banaras both holy & ancient cities of India adds to 15.
15 adds to 6 of Venus which attract lot of tourism.
15 in numerology means its a no. of magic & mystery.
Its a powerful no. with strong personal magnetism.
Nowadays many movies are shot in banaras & every year many foreigners & tourists come to these holy places.
Ujjain & Banaras are known for their magical & mysterious old religious stories true to their name number.