A plaque on the base of this statue holds a bewitching design.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The Pope’s secret escape route.

A book bound in the skin of an infamous criminal, along with countless other specimens.

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat.

This ancient structure appears Roman, but was constructed during the 16th century and was utilized until 1911.

This architecturally eclectic early-20th century mosque was built as a place of worship for the Islamic followers of a Jewish messiah.

Flames have been burning within this mountain for more than 2,500 years.

Roman ruins, natural methane fires and a lovely beach.

This arch granting triumphal entrance into Antalya was designed to honor the emperor's visit.

A recently-abandoned international exhibition center.

The best-preserved ancient theater in the world.

The largest Neolithic ruins in the world hide a notably clean prehistoric metropolis.