Engine driver Josef Kowatsch (top L) steers a train through the NEAT Gotthard Base Tunnel during a media visit near the town of Erstfeld August 24, 2015. Crossing the Alps, the world's longest train tunnel should become operational at the end of 2016, consisting of two parallel single track tunnels, each of a length of 57 km (35 miles). (Photo by Arnd Wiegmann/Reuters)

Titanoboa, meaning "titanic boa," is an extinct genus of snake that lived approximately 60–58 million years ago, during the Paleocene epoch, a 10-million-year period immediately following the dinosaur extinction event. The only known species is Titanoboa cerrejonensis, the largest, longest, and heaviest snake ever discovered, which supplanted the previous record holder, Gigantophis.

A full-scale model of the snake was unveiled at New York City's Grand Central station before the exhibit opens at the Smithsonian in Washington DC.

A medium performs the religious dance "Narsingh Avatar" during the traditional Kartik dance festival at Patan Durbar Square in Lalitpur, Nepal November 24, 2015. Observed for eight days, the festival is the longest dance festival in Nepal, and features a mix of drama, music and dialogues introduced by King Siddhinarsingh Malla in 1637 AD. (Photo by Navesh Chitrakar/Reuters)

The Angel Oak Tree is a Southern live oak located in Angel Oak Park on Johns Island near Charleston, South Carolina. The Angel Oak Tree is estimated to be at least 400 years old[citation needed]. It stands 66.5 ft (20 m) tall, measures 28 ft (8.5 m) in circumference, and produces shade that covers 17,200 square feet (1,600 m2). Its longest branch distance is 187 ft. in length. Angel Oak was the 210th tree to be registered with the Live Oak Society.

Vast collection of fine art photography about to open at Pier 24 in Manhattan. One of the world's most prestigious annual photography events, The Photography Show is the longest-running and foremost exhibition dedicated to the photographic medium, offering a wide range of museum-quality work, including contemporary, modern, and 19th-century photographs as well as photo-based art, video, and new media. Here: Les Trois Femmes Deux, 2018. (Photo by Mickalene Thomas/Courtesy of Yancey Richardson Gallery, New York)

Bam Bam makes a fan feel his sweaty chest at Johnson' s Station in Picayune, Ms., on February 11, 2018. The Micro Wrestling Federation is a full scale, WWE type event sporting an entire cast under five feet tall. Founded in 2000, the MWF is the longest running organization within the Little Person wrestling industry according to its manager. (Photo by Emily Kask/AFP Photo)

The Öresund or Øresund Bridge is a double-track railway and dual carriageway bridge-tunnel across the Øresund strait between Scania (southernmost Sweden) and Denmark. The bridge runs nearly 8 km (5 miles) from the Swedish coast to the artificial island of Peberholm, which lies in the middle of the strait. The remainder of the link is by a 4 km (2.5 mile) tunnel from Peberholm to the Danish island of Amager. The Øresund Bridge is the longest combined road and rail bridge in Europe, and connects two major metropolitan areas: Copenhagen, the Danish capital city, and the major Swedish city of Malmö. It connects the road and rail networks of Scandinavia with those of Central and Western Europe.

A man wearing a Guy Fawkes mask enjoys a ride on a 350-meter (1148 feet) long water slide during 2015 City Silde Festa in central Seoul, South Korea, July 19, 2015. A 350 meter-long waterslide has been installed in downtown of Seoul, the longest waterslide to be recorded in Korea, according to local media. (Photo by Kim Hong-Ji/Reuters)