Oh what a sight, over 300 magnificent Bonsais in these huge grounds. the bonsais and the theme behind each one is awe inspiring, i lost count of the pics I took. The rest of the citadel was incredable as well, Ancient buildings, archealogical digs, monuments, fortresses, artifacts, sculptures, paintings and Ho Chi Min's underground war room and lots more. We were there for 3 hours and that was only half the time needed to see everything. Well worth as a must see when in Hanoi. Incredable and well worth the $1.00 entrance fee.