What may be some of the disadvantages of developing tourism?

Developping tourism may brings many profits but as well as disadvantages, I will have a brief talk about it. Firstly, developping tourism in a certain sightseeing spot will ruin the surroundings which does no good to the tourist attractions. Rubbish might be thrown, maintenance might be difficult because crowds of people come, ancient historic structures or relics might be damaged by people. Anyway, over developping of tourism will sure bring a lot of problems when we are crushed into its overwhelming advantages.