Today it is possible to walk through the old agora (marketplace) and stroll along Roman roads.
( Today ( it ( ( is ( possible ( to ( ( ( walk ( through ( ( the ( old agora ) ) ( -LRB- ( marketplace -RRB- ) ) ) ) ) and ) ( ( stroll along ) ( Roman roads ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NN Today)) (NP (PRP it)) (VP (VBZ is) (ADJP (JJ possible) (S (VP (TO to) (VP (VP (VB walk) (PP (IN through) (NP (NP (DT the) (JJ old) (NN agora)) (PRN (-LRB- -LRB-) (NP (NN marketplace)) (-RRB- -RRB-))))) (CC and) (VP (VB stroll) (PRT (RP along)) (NP (JJ Roman) (NNS roads)))))))) (. .)))
The old market and Roman roads still exist today. 
( ( ( ( The ( old market ) ) and ) ( Roman roads ) ) ( still ( ( exist today ) . ) ) )
(ROOT (S (NP (NP (DT The) (JJ old) (NN market)) (CC and) (NP (JJ Roman) (NNS roads))) (ADVP (RB still)) (VP (VBP exist) (NP (NN today))) (. .)))