3. Have A Loose Itinerary
I suggest having no more than two major things planned per day in order to fully appreciate your time for each place you are visiting. Travelers often try to cram too many things into a few hours rushing from place to place without fully appreciating the present moment. It's best to slow down and totally immerse yourself for each thing planned. Some of the most memorable moments often occur when you just go with the flow.
It's also best to have some downtime to relax and soak in the culture. I'm big on relaxing at local coffee houses with a beverage and something light to eat between meals. I enjoy this time people watching and researching things to explore on the off beaten path away from the touristy areas. This is also a great time to recharge your cell phone battery and freshen up.
4. Take A Break From Sightseeing
Take a break from sightseeing to relax while still enjoying the sights. You can always find somewhere interesting to hang out without having to go back to the hotel. For instance, enjoy a picninc at the Eiffel Tower, A slice of pizza in The Piazza del Campo in Siena, Italy, sit on a bench in front of the fountains at the Burj Khalifa in Dubai, enjoy the majestic views of the Jungfraujoch in Switzerland, wonder at the site of the Blue Mosque in Instanbul. These are a few examples of how to take a moment and soak in the culture while relaxing in the middle of sightseeing.
5. Become A Temporary Local
Always take time to talk to the locals during daytime hours in an open area in a family friendly environment. No matter what country I'm visiting I always manage to become a temporary local and adjust to their way of living for a few days. It is the best history lesson that will offer the most amazing experience free of charge. You can also attend a religous service or go to the library to witness first hand the local culture.