A gigantic collection of teeny, tiny books.

The building's fluid, wavelike walls are a true feat of architectural ingenuity.

This mysterious but iconic tapered tower appears in many Azeri fairytales and legends.

An unmistakable facial pareidolia in the Julian Alps also includes a fantastic tale.

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

Hungarian self-built castle.

World's tallest cigar-shaped radio tower.

"Medieval" castle built in the mid-20th century by one family.

The remains of an entire Roman city can be explored in this interactive museum.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

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

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

One of Hungary's most influential places of learning is also home to one of the world's most beautiful libraries.

This Hungarian stilt village is built in a lake that never freezes over due to the power plant that that uses it as a cooling pond.

300 years of pharmaceutical history on display.

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

The massive white mound and accompanying water terraces are a striking geological oddity.

Hundreds of boat-shaped headstones fill this graveyard as part of a centuries-old custom with mysterious origins.

A collection of intricate sculptures so small they have to be seen through a microscope.

Everything from miniature biblical scenes to life-sized statues are almond-based at this sweet and nutty gallery.

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

Home of controversial poet priest who penned the words for the Austrian national anthem used in the 1930s.

This medieval church in a small Austrian village is home to a 700-year-old Mickey Mouse lookalike.

Narrow-gauge railway with its own personal power grid.