Europe

Temple of Poseidon, Cape Sounion, Greece: The Temple of Poseidon is an ancient Greek temple on Cape Sounion, Greece, dedicated to the god Poseidon. There is evidence of the establishment of sanctuaries on the cape from as early as the 11th century BC...The Greeks considered Poseidon to be the "master of the sea". Given the importance to Athens of trade by sea and the significance of its navy in its creation and survival during the fifth century, Poseidon was of a particular relevance and value to the Athenians. Wikipedia

Giants causeway, Northern Ireland, United Kingdom: The Giant's Causeway is an area of approximately 40,000 interlocking basalt columns, the result of an ancient volcanic fissure eruption. It is located in County Antrim on the north coast of Northern Ireland, about three miles northeast of the town of Bushmills. Wikipedia

Monte Carlo, Monaco: Monte Carlo is an official administrative area of Monaco, specifically the ward of Monte Carlo/Spélugues, where the Monte Carlo Casino is located. Informally, the name also refers to a larger district, the Monte Carlo Quarter, which besides Monte Carlo/Spélugues also includes the wards of La Rousse/Saint Roman, Larvotto/Bas Moulins and Saint Michel. Monte Carlo is situated on a prominent escarpment at the base of the Maritime Alps along the French Riviera. Near the quarter's western end is the "world-famous Place du Casino, the gambling center. Wikipedia

Saint Domnius Cathedral, Split, Croatia: The Cathedral of Saint Domnius, known locally as the Sveti Dujam or colloquially Sveti Duje, is the Catholic cathedral in Split, Croatia. The cathedral is the seat of the Archdiocese of Split-Makarska, currently headed by Archbishop Zdenko Križić. Wikipedia

Amsterdam, Netherlands: Amsterdam is the capital and most populated city of the Netherlands. Located in the Dutch province of North Holland, Amsterdam is colloquially referred to as the "Venice of the North", for its large number of canals, now a UNESCO World Heritage Site. Amsterdam was founded at the mouth of the Amstel River, which was dammed to control flooding. Originally a small fishing village in the 12th century, Amsterdam became a major world port during the Dutch Golden Age of the 17th century, when the Netherlands was an economic powerhouse. Wikipedia

Dom Luís I Bridge, Porto, Portugal: The Dom Luís I Bridge, or Luís I Bridge, is a double-deck metal arch bridge that spans the river Douro between the cities of Porto and Vila Nova de Gaia in Portugal. At its construction, its 172 metres span was the longest of its type in the world. Wikipedia

Castelvecchio Bridge, Verona, Italy: The Castel Vecchio Bridge or Scaliger Bridge is a fortified bridge in Verona, northern Italy, over the Adige River. The segmental arch bridge featured the world's largest span at the time of its construction. Wikipedia

Big Ben, London, England: Big Ben is the nickname for the Great Bell of the Great Clock of Westminster, and, by extension, for the clock tower itself, which stands at the north end of the Palace of Westminster in London, England. Wikipedia

Margravial Opera House, Bayreuth, Germany: The Margravial Opera House is a Baroque opera house in the town of Bayreuth, Germany. Built between 1745 and 1750, it is one of Europe's few surviving theatres of the period and has been extensively restored. Wikipedia

Landwasser Viaduct, Switzerland: The Landwasser Viaduct is a single-track six-arched curved limestone railway viaduct. It spans the Landwasser between Schmitten and Filisur, in the canton of Graubünden, Switzerland. Wikipedia

Oia, Santorini, Greece: Oia is a small village and former community in the South Aegean on the islands of Thira (Santorini) and Therasia, in the Cyclades, Greece. Since the 2011 local government reform it has been part of the municipality of Santorini, of which it is a municipal unit. It covers the whole island of Therasia and the northwesternmost part of Santorini, which it shares with the municipal unit of Santorini. The main street is named Nikolaou Nomikou. Wikipedia

Oktoberfest Beer Festivals, Munich, Germany: Germany… A big country known for big engines, big castles, and even bigger beers. Beers, in fact, that they’ve been drinking in Germany longer than almost anyone else in the world... Oktoberfest is the world's largest Volksfest, featuring a beer festival and a travelling carnival, and is held annually in Munich, Bavaria, from mid- or late-September to the first Sunday in October. The annual event attracts more than seven million international and national visitors at its peak. Wikipedia

Piva Canyon, Pluzine, Monténégro: Located in the Durmitor National Park, the Piva River offers one of the most beautiful canyons in the country, more than 1000m deep: the Piva Canyon. It is fed by the waters of the surrounding mountains that melt during the summer. Not far from the river, you can discover the monastery of Piva built in the sixteenth century... The Piva is a river in Montenegro and Bosnia and Herzegovina... Plužine is a town in Montenegro in the northern region. Wikipedia

Sisikon, Switzerland: Sisikon is a municipality in the canton of Uri in Switzerland. It is situated on the shore of Lake Lucerne. Sisikon is served by the Sisikon station, situated within the municipality and on the Gotthard railway. Sisikon can be accessed by road via the Axenstrasse. Wikipedia

Brunswick Monument, Geneva, Switzerland: The Brunswick Monument is a mausoleum built in 1879 in the Jardin des Alpes in Geneva, Switzerland to commemorate the life of Charles II, Duke of Brunswick. Wikipedia

Stockholm, Sweden: Stockholm is the capital and most populous city of Sweden as well as the largest urban area in the Nordic countries. The city stretches across fourteen islands where Lake Mälaren flows into the Baltic Sea. Outside the city to the east, and along the coast, is the island chain of the Stockholm archipelago. Wikipedia

Hallgrimskirkja, Reykjavik, Iceland: Hallgrímskirkja is a Lutheran parish church in Reykjavík, Iceland. At 74.5 metres tall, it is the largest church in Iceland and among the tallest structures in the country. Known for its distinctively curved spire and side wings, it has been described as having become an important symbol for Iceland's national identity since its completion in 1986. Wikipedia