Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

This blowhole is supposedly caused by a trapped monster.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

This 28-foot-tall milk can contains one of the most whimsical ice cream parlors in town.

This tomb of a Sufi mystic is a remnant of Ottoman rule in Hungary.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

A diminutive statue that was inspired by the sculptor's own daughter.

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

This quiet, unassuming spot in Budapest was the birthplace of the bloody 1956 Hungarian Revolution.

A tribute to an iconic act of defiance from the Croatian War of Independence involving a small car.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

The unusual sculptures are believed to be powerful political symbols.

This striking, historic hotel has major Wes Anderson movie energy.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

Arguably Belgrade's only example of pure Art Deco architecture.

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

The second-largest Jewish temple in Bulgaria was deserted after World War II, seized by the communist government and then abandoned again.

A Soviet-style monument, built after transferring the remains of heroes from their graves.

Historic beer hall in Bucharest with magnificent stained glass and a lively folk band.

17th century palace once a meeting place for politicians.

This solitary monastery may hold the remains of Vlad the Impaler (but probably not).

This sculpture used famed boxer Joe Louis as the inspiration behind its body.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

Romania's triumphal arch looks out over Bucharest.