St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Real bones which are said to have belonged to a Polish dragon.

Hungarian Jews were ghettoized during the Second World War, but little remains of the original wall that closed the Jewish people off from the rest of the city.

Dine on Hungarian-Jewish dishes at this multigenerational, family-run institution.

A triumphant marble and bronze fountain depicting a 15th-century Hungarian king and his hunting party.

The true meaning behind this sculpture remains unknown.

On Gellért Hill, this statue depicts the tragic tale of lovers divided by the Danube.

A Hungarian optometrist's charming collection of Asian art and curiosities.

The oldest private art gallery in all of Hungary.

Legions of Roman soldiers bathed in this ancient spa complex under a Budapest transit station.

A two-way chairlift system between Zugliget and the highest point in the city.

This quaint Hungarian railway system is operated exclusively by children between the ages of 10 and 14.

This hidden art nouveau gem was designed by an architect in search of a national style.

Some of the greatest minds in the history of Hungarian art and science converged in this café.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

A Hungarian pharmacy museum with a box full of mummy powder.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

Once the home of a hermetic monk, this cave now houses a small church.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

The narrowest house in Buenos Aires is less than 10 feet wide.

Stenciled handprints and wall paintings dating back 10,000 years, some of the earliest forms of cave art.