If you would like to escape from the busy city of Bangkok, I would recommend Nakhon Nayok for you to visit. It is not far away from Bangkok, only 100 km. east. In Nakhon Nayok, you will find two wonderful waterfalls where you can feel relax with the fresh air and pure waterfall.
The first waterfall is Sarika Waterfall. It is the World Heritage site and one of wonderful waterfall in Thailand. It is a nice place for the one who love nature like you.
The second waterfall is Nangrong Waterfall. It is a perfect place for you to enjoy swimming and have a great picnic with your warm family during your wonderful holiday.
Let's go there and you will realize that the two waterfalls worth a visit indeed!