Experimental tests of general relativity: Where are we?

After a short historical résumé of the experimental tests of general relativity I will concentrate essentially on three general topics: a) observational tests; b) Earth bound experiments to test Gravito-Magnetic effects. Starting from observation, I will review the current status of the information drawn from the dynamics of binary systems including compact objects; then I shall discuss the prospects of precision astrometry and the related underway projects such as GAIA. As for Gravito-Magnetism, I will review the final results of the GP-B experiment, published this year after five years of data analysis, then I will recall the previous outcome of the elaboration of the LAGEOS data and I shall discuss the prospects of the future LARES mission. Finally I shall present the recently proposed terrestrial experiment G-GranSasso, based on the use of gyrolasers as extremely sensible rotation sensors. Mention will also be made of the equivalence principle tests and their future.