A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

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

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

A stunning Art Nouveau cinema in the heart of Budapest.

The holes in this wall provide a glimpse into Jewish life in Budapest, both past and present.

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

This sculpture honors the man who was known as the "Righteous Among the Nations."

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.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

Formerly known as Saville Theatre, this mid-20th-century entertainment hub includes an ornate frieze.

A famous burial ground with a history both grim and literary.

Chelsea's soldiers were given strict orders when crossing this historic bridge.

Only a few pieces remain of the structure that carried people and goods across the Thames for some 600 years.

The sculpture of the deceased cockatoo flops atop its personal plinth.

Visit the grave of a famous feminist author and the mother of Mary Shelley.

A plaque marks the underground site of one of London's "lost rivers."

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.

A memorial for public executions that dates back to the 14th century.

The Brutalist building harbors an unusual inverted dome that swoops down over its central sacred room.

A wonderfully preserved example of London's 1960s-style high-density, low-rise public housing.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

This 19th-century pub features stained-glass windows celebrating Victorian-era “champions.”

Hidden beneath the streets of London is a secret subway that only carried mail.