This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

The tomb of the mythological founder of Padua is not hidden in some obscure crypt, but stands right in the middle of the city square.

Something's missing between the arcades of the Palazzo della Ragione in "the city of the three withouts."

Centuries ago, red and white wine poured from the statue's breasts whenever a new Venetian ruler was elected.

A small structure built from used railroad ties honors the short term of America's 20th president.

A mysterious plaque to the even more mysterious "Fr. Pat Noise," killed in "suspicious circumstances."

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

A medieval weapon rumored to have been used by the brilliant poet himself.

This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

The first dish to bounce radio signals off the Moon, it was the forerunner to the U.S. Space Program.

Two stone columns flank the grand Venice square, but there were supposed to be three.

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

This eclectic, mosaic-clad home includes a bamboo ping-pong loft and a "Whispermaphones" intercom.

This unique crypt designed by Frank Lloyd Wright for his longtime friend was not completed in either man's lifetime.

A small island hides in plain sight on Austin's Lady Bird Lake.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

The absurd creation is a compulsory destination for selfies in Buffalo.

A tiny plaque marks the location of the water source that facilitated the birth of modern-day Boston.