An ancient Roman relief beautifully preserved on the façade of a house.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

Two standing giants remain as a tribute to Luxembourg's metallurgical past.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

This unassuming tree stump reportedly traces its roots to the famous pharaoh queen's reign.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

This historic electric train has operated with regularity since the early 1900s.

A scene from one of Hungary's most famous novels.

Visit an imposing 13th-century Transylvanian citadel lurking not far from the region's more heavily touristed attractions.

A giant portrait of an ancient king looms over the river.

Moss and stone turn this waterfall into an otherworldly liquid veil.

An old spa town in the mountains of Romania where, according to legend, the great hero Hercules once bathed.

One of the oldest churches in Romania is believed to have been built on the site of a pagan temple.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

Once the legendary capital of the Dacian Kingdom, this city has been reduced to mere ruins.

This 3,800-year-old site contains markers used to study the movement of the sun and moon and create a lunar calendar.

Stone pillars and a petrified wedding party in the hills of North Macedonia.

A mosaic monument that commemorates the historical struggles of the people of North Macedonia.

This historic black and white monastery is one of Bulgaria's architectural jewels.

A scenic UNESCO site that doubles as a habitat for various forms of wildlife.

It's unclear what caused the fire that led to this opulent hotel's demise.

After witnessing the rise and fall of three empires, this ancient city was finally destroyed by a series of earthquakes.