Smyrna is one of only two churches out of the seven in chapters 2-3 of Revelation, for which Jesus holds no condemnation. Most of the other letters contain a mixture of commendation and rebuke, but Smyrna is all commendation, and encouragement to remain faithful and patient during the trials they would face... to remain "faithful unto death", and He would give them "the crown of life". One of the early church martyrs was Polycarp, the bishop of Smyrna who in the second century was burned at the stake for his faith, as an old man. 

“...be thou faithful unto death, and I will give thee a crown of life’’ (Revelation 2:10)

Modern day Izmir in Turkey stands on the site of the ancient city of Smyrna.

Main Attractions

 İzmir Agora Open Air Museum

The main archaeologic preserves of ancient Smyrna, the Agora Open Air Museum, features the remains of Roman era  courtyards, gates, porticos, streets & temples.

References:

https://en.wikipedia.org/wiki/Smyrna

http://www.visitizmir.org/en/how-come/phokaia/agora-acikhava-muezesi