An ancient stone fortress considered by many to be the eighth wonder of the world.

This luscious masterpiece created by landscape designer Bevis Bawa inspired the work of his brother, a famous Sri Lankan architect.

A black cat protests the City Guild in Riga's Old Town.

One of only two places in the world where two rivers cross each other without the waters mixing.

A collection of old neon signs from all over Poland line a secluded courtyard.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

Ruins of a late 1950s Polish ski jump ramp in the middle of the city.

A hidden art gallery in an abandoned Warsaw fort.

Warsaw's fantastically preserved gasworks...almost.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

A memorial to the murdered Jews of Kaunas.