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)))))))) (. .)))
Thre is nothing left today of the old Roman roads. 
( Thre ( ( is ( nothing ( ( left today ) ( of ( the ( old ( Roman roads ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Thre)) (VP (VBZ is) (NP (NP (NN nothing)) (VP (VBN left) (NP (NN today)) (PP (IN of) (NP (DT the) (JJ old) (JJ Roman) (NNS roads)))))) (. .)))