The metal leaves on this tree are engraved with the names of Holocaust victims.

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.

From cartoon characters to tiny tanks, a guerilla sculptor's little bronze statues are hidden throughout the city of Budapest.

Also known as Uncle Karl, the beloved bronze copper keeps a watchful eye on St. Stephen’s Basilica while people rub his lucky belly.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

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

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.

A war-torn Olympic relic is being overtaken by graffiti and nature.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

Inat Kuća, or "House of Spite," is more than just an oddly named restaurant.

A herd of half-sized cow sculptures has stood in this part for nearly 50 years.

This church was transported brick by brick from the ruins of a 16th-century city into Panama City's current historic district.

Frequent fliers welcome in this airplane hotel.

An 11th-century runestone decorates the halls of Terminal 2 of this Scandinavian travel hub.

A Japanese video game arcade hides in the back of a Swedish pool hall.

Maybe the only restaurant in the world where your seat will be signed by a Nobel laureate.

This legendary dessert was served to Nobel laureates for decades.

Stockholm's tiniest statue is of a small boy looking at the Moon.

What looks like a birch tree smushed between two pieces of glass often confounds commuters.

A temporary art piece to celebrate LGBTQ Pride is now a permanent part of Stockholm's traffic landscape.

A miniature model of the iconic Stockholm department store.

Small Easter eggs are hidden in the ventilation holes of the city's newest trains.

Sweden's oldest animated sign is still lighting up the skyline today.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.