Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

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

Museum dedicated to the terror regimes of Hungary.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

Unparalleled stargazing, one of Colombia's best observatories, and a swimming pool can all be found in the middle of this ancient tropical forest.

A self-taught astronomer fell in love with the stars and built his own observatory in Colombia.

This dramatic monument in Colombia honors a little-known indigenous fighter for independence.

In the heart of Medellín, an artsy urban complex sets the stage for demonstrations and protests.

Located outside Medellín, this Colombian park focuses on conservation and sustainability.

This city park wants you to take your shoes off.

Home to 23 voluptuous and instantly lovable sculptures by one of Latin America's most celebrated artists.

Three hundred illuminated pillars form an “artificial forest” in Medellín.

An unusual and beautiful form of mass transit serves the city's steepest neighborhoods.

At the site of a graffiti artist's murder, fellow artists gather to pay homage.

Colombia's first concrete structure doubles as a replica of Versaille's Petit Trianon Belvedere and a symbol for development.

Every Sunday, Bogotá turns 75 miles of its city streets into a bicycle superhighway.

The world's first crowdfunded skyscraper has not gone quite to plan.

A celebration of Colombia’s premier contemporary artist.

Pilgrims each carried a brick to the top of Mount Monserrate to help build this historic sanctuary in Colombia.

Towering high above the neighborhood of La Candelaria, the church is easily recognizable by its distinctive red-and-white striped facade.

Colombia's biggest botanical garden contains plants from all across the country.