Monsal Trail, crowded with cyclists, former rail line viaduct over Monsal Dale at Monsal Head, Peak District, Derbyshire, England, United Kingdom, Europe

Elevated view over the Djemaa el-Fna, Marrakech (Marrakesh), Morocco, North Africa, Africa, Africa

Hyangwonjeong pavilion and Chwihyanggyo bridge over water lily filled lake in summer, Gyeongbokgung Palace, Seoul, South Korea, Asia

Elevated view over the Djemaa el-Fna, Marrakech (Marrakesh), Morocco, North Africa, Africa

Hyangwonjeong pavilion and Chwihyanggyo bridge over water lily filled lake in summer, Gyeongbokgung Palace, Seoul, South Korea, Asia

View over the city, Guanajuato, UNESCO World Heritage Site, Mexico, North America

View over the old town, Piazza Armerina, Sicily, Italy, Europe

View over crowded beach to the Old Town (Stari Grad), and Budva Bay, Budva, Montenegro, Europe

View over the town of Keren in the highlands of Eritrea, Africa

View over crowded beach to the Old Town (Stari Grad), and Budva Bay, palm-tree in foreground, Budva, Montenegro, Europe

View over crowded beach to the Old Town (Stari Grad), and Budva Bay, Budva, Montenegro, Europe

Panorama over Quito, Pichincha Province, Ecuador, South America

View over Funchal, Madeira, Portugal, Atlantic, Europe

High-angle view over the Holy Tuesday Procession leaving the chapel El Calvario near Antigua during Holy Week 2017, Antigua, Guatemala, Central America

Aerial view over boats and people on a crowded beach on the main beach at Lindos Town, Rhodes, Dodecanese Islands, Greek Islands, Greece, Europe

Footbridge over traffic on Beijing main street, China

Aerial view over the Cliff Palace crowded, with tourists, in the Mesa Verde National Park, UNESCO World Heritage Site, Colorado, United States of America, North America

Crowds of people on the street in Hong Kong, China, Asia

Crowds of people on the street in Hong Kong, China, Asia

Wildebeest (Connochaetes taurinus), Gnu migration, jostling on the bank of the Mara River, Masai Mara, Kenya, East Africa, Africa

View over the crowds at the Oktoberfest, Munich, Bavaria, Germany

Crowded beach with beach chairs, Heringsdorf resort, Usedom Island, Mecklenburg-Western Pomerania, Germany, Europe

Baltic Sea beach in summer, lots of people, wind-protection tents, Bansin resort, Usedom Island, Mecklenburg-Western Pomerania, Germany, Europe

Shibuya pedestrian crossing, the world's busiest pedestrian crosswalk, Shibuya district, Tokyo, Japan, Asia

Tourist hotels, tourists on the beach at Ayia Napa, Cyprus, Europe

Playa Levante Beach during midsummer, Benidorm, Costa Blanca, Spain, Europe

Playa Levante Beach during midsummer, Benidorm, Costa Blanca, Spain, Europe

Floating Market in Damnoen Saduak, southwest of Bangkok, Thailand, Asia

View over the Stuttgart Beer Festival, crowds, amusement rides, funfair and beer tents, Cannstatter Volksfest, Stuttgart, Baden-Wuerttemberg, Germany, Europe

Tourists crowding Benidorm's Playa Levante beach during the main tourist season, Costa Blanca, Spain, Europe

Tourists crowding Benidorm's Playa Levante beach during the main tourist season, Costa Blanca, Spain, Europe

People trying to enter an already overloaded public bus in Bhuj, Gujarat, India, Asia

Art and the Berlin Wall, crowds breaking through the Berlin Wall, painting on a remaining segment of the Berlin Wall, East Side Gallery, Friedrichshain-Kreuzberg, Berlin, Germany, Europe

View from the Charminar on a busy road, Hyderabad, Andhra Pradesh, India, Asia

Overloaded jeep after crossing the Babusar Pass on the way down to Chillas, North West Frontier, Pakistan, South Asia

Tourist hotels, tourists on the beach at Ayia Napa, Cyprus, Europe

Crowded beach on a hot summer's day, Bournemouth, Dorset, England, United Kingdom, Europe

Truck as public transportation, Vinales, Cuba, Caribbean

Many houses made of toy blocks, monotonous rows of houses with an odd one out, symbolic image living for in the city

Many people on their way to the Wiesn or Oktoberfest grounds, S-Bahnhof Hackerbruecke station, Munich, Bavaria, Germany, Europe

Traffic jam in Koblenz city centre, Rhineland-Palatinate, Germany, Europe

View of the street in front of the cathedral, city view, Bafoussam, Cameroon, Africa

Bathers on Playa Levante beach, mass tourism, Benidorm, Costa Blanca, Spain, Europe

Art and the Berlin Wall, crowds breaking through the Berlin Wall, painting on a remaining segment of the Berlin Wall, East Side Gallery, Friedrichshain-Kreuzberg, Berlin, Germany, Europe

Heavy traffic in the capital of Gujarat, Ahmedabad, Gujarat, India, Asia

Beach, Playa Levante, tourist hotspot Benidorm, Costa Blanca, Spain

Art and the Berlin Wall, crowds breaking through the Berlin Wall, painting on a remaining segment of the Berlin Wall, East Side Gallery, Friedrichshain-Kreuzberg, Berlin, Germany, Europe

Beach, PlayaPoniente, tourist hotspot, Benidorm, Costa Blanca, Spain

Tourists crowding Benidorm's Playa Levante beach during the main tourist season, Costa Blanca, Spain, Europe

Tourists crowding Benidorm's Playa Levante beach during the main tourist season, Costa Blanca, Spain, Europe

View from the Bridge over the Moscva to Down Town, the Kreml and the Government Buildings, Moscow, Russia, East Europe, Europe

Busy street, Charminar, Hyderabad, Andhra Pradesh, India, Asia

Many houses made of toy blocks, symbolic image living for in the city

People on the beach of Swinoujscie, Usedom Island, Poland, Europe

Bathers on Playa Levante beach, mass tourism, Benidorm, Costa Blanca, Spain, Europe

Bathers on Playa Levante beach, mass tourism, Benidorm, Costa Blanca, Spain, Europe

Playa Levante beach, Benidorm, Costa Blanca, Spain, Europe

Historic tram driving through the crowd, shopping street Istiklal Caddesi, Independence Street, Beyoglu, Istanbul, Turkey

An adolescent Pashtun girl shields her face as she carries water through the streets of the Meira camp for earthquake survivors, Northwest Frontier Province, Pakistan. The conservative code of the Pashtun tribe of the area dictate that girls must cover themselves, including their faces, after their first period. The crowded life in the camp has made such rules difficult to follow. The Meira Tent camp (also called Mera, or Maria camp), is located on the Indus River in the Battagram district. The camp, the largest for displaced people in Pakistan, hosts over 21,000 earthquake survivors, primarily from the Allai valley in Pakistan's NWFP, one of the areas worst-hit by the October 8, 2005 earthquake.

Poor district slums with wooden houses over water, Cebu city, Philippines

Indonesia, Java, Borobudur, A group of very colourfully dressed, seated Muslim women look out over the monument to the surrounding countryside.

INDIA Rajasthan Pushkar Over crowded bus with passengers on the roof