San Juan is the capital of Puerto Rico — a Caribbean island territory of the United States with 3.2 million people, and a city of 340,000 that is the oldest city in US jurisdiction (the Spanish founded the settlement of San Juan in 1521 on a rocky islet at the entrance to San Juan Bay — making it the second oldest European city in the Americas after Santo Domingo). San Juan's historic district, Old San Juan (La Ciudad Amurallada — the Walled City), is one of the finest examples of Spanish colonial urban architecture in the Americas: 500-year-old blue cobblestone streets (the cobblestones are made from iron slag ballast from Spanish galleons — the "adoquines" glow faintly blue in the rain), brilliantly coloured colonial townhouses in ochre, turquoise, yellow and terracotta, the two massive Spanish military fortifications that defended the island for 400 years (Castillo San Felipe del Morro — the massive hexagonal fortress on the headland, 1539-1786, one of the largest fortifications in the Americas; and Castillo San Cristóbal, 1634-1783, the largest Spanish fort in the New World at 11 hectares), and the Cathedral of San Juan Bautista (1521, one of the oldest churches in the Western Hemisphere, containing the tomb of the conquistador Juan Ponce de León). Puerto Rico is simultaneously part of the United States (US citizens, US dollar, US postal service) and deeply Caribbean and Latin American — the Afro-Caribbean plena and bomba music, the piña colada (invented in San Juan at the Caribe Hilton in 1954), the lechón (whole-roast pig over an open fire, the cornerstone of Puerto Rican celebration cooking), and the bacalaítos (fried salted cod fritters) define an island culture that is unlike anywhere else.
El Morro (Castillo San Felipe del Morro, 1539-1786 — the massive hexagonal headland fortress at the northwest tip of the Old San Juan islet, rising 43 m directly from the sea on the Atlantic side; the last line of defence of Puerto Rico for 400 years; the six-level fortress with its lighthouse, dungeons, gun batteries and ramps for cannon transport; the kite-flying esplanade (the vast green lawn approaching the fortress walls where Puerto Rican families fly kites on weekends); a UNESCO World Heritage Site with Castillo San Cristóbal — together forming the San Juan National Historic Site; the view from the battlements across the Atlantic and the San Juan Bay entrance is among the finest in the Caribbean).
🎫 Book tickets via GetYourGuideThe Old San Juan historic district (7 blocks wide, 13 blocks long — the complete colonial settlement on its islet) has the most distinctive street surface in the Americas: the adoquines (the blue-grey cobblestones, made from iron slag used as ballast in Spanish galleons and repurposed as street paving in the 16th century; the material gives the streets their characteristic faint blue-grey shimmer, especially visible when wet) on streets named Calle del Cristo, Calle Fortaleza, Calle San Francisco — the colonial street grid has changed little since 1600; the brightly coloured 16th-18th century townhouses in turquoise, ochre, rose and yellow are the quintessential Caribbean colonial urban image.
🎫 Book tickets via GetYourGuideCastillo San Cristóbal (1634-1783, 11 hectares — the largest Spanish fort in the New World; its system of outer walls, moats and counterscarp designed to defend against the land approach that El Morro's ocean position could not cover; the fort used a revolutionary "defence in depth" design of multiple self-contained strongholds that could continue defending after an outer position fell; Sir Ralph Abercrombie's British assault of 1797 was repelled from these walls; the tunnel system beneath connects to the old city; the Devil's Sentry Box on the Atlantic cliff edge — the legendary guardsman who vanished overnight in 1769).
🎫 Book tickets via GetYourGuideThe Caribe Hilton in Puerta de Tierra (adjacent to Old San Juan) is the birthplace of the piña colada — bartender Ramón "Monchito" Marrero invented the drink here in 1954, blending Puerto Rican rum, coconut cream and pineapple juice for hotel guests; the original Beachside Bar at the Caribe Hilton still serves the cocktail; then lechón (the Puerto Rican whole-roast suckling pig, spit-roasted over a wood fire — the lechoneras of La Ruta del Lechón in Guavate, 40 km south of San Juan, are the spiritual home of Puerto Rican celebratory cooking) and mofongo (mashed plantain with garlic and pork crackling, the most Puerto Rican of all dishes).
El Yunque (the Luquillo Mountains, 40 km east of San Juan — the only tropical rainforest in the US National Forest System; 28,000 acres of cloud forest, tabonuco lowland forest and sierra palm elfin forest; the Puerto Rican parrot (critically endangered, fewer than 500 remaining, entirely endemic to El Yunque) lives in the high forest; the coquí frog (the tiny tree frog whose distinctive ko-QUI call is the sonic symbol of Puerto Rico — the sound that distinguishes Puerto Rican night from any other; there are 17 endemic coquí species in Puerto Rico); the La Mina waterfall trail (1.7 km, 45 min, ending at a swimmable waterfall pool).
🎫 Book tickets via GetYourGuideCondado (the beach resort neighbourhood of San Juan, adjacent to Miramar, 3 km east of Old San Juan) has the finest urban beach in Puerto Rico — a 600 m strip of white Caribbean sand with the characteristic aquamarine Atlantic water (25-28°C year-round, no jellyfish, moderate surf); the Condado Lagoon behind the beach is a protected natural lagoon (mangroves, pelicans, herons) with stand-up paddleboarding and kayaking; the Condado strip has the finest hotels (the Vanderbilt Hotel, the restored 1919 Spanish Revival Condado building), the best restaurants and the most active nightlife in Puerto Rico outside the Santurce arts district.
🎫 Book tickets via GetYourGuideLa Fortaleza (the Governor's Palace, 1533 — the oldest executive residence still in use in the Western Hemisphere, now the official residence of the Governor of Puerto Rico; a UNESCO World Heritage Site; the Moorish-style gate, the manicured gardens and the sea-facing facade are the defining image of Puerto Rican colonial power; guided tours of the interior on weekday mornings) and the adjacent Cathedral of San Juan Bautista (1521-1852 — one of the oldest churches in the Western Hemisphere, rebuilt multiple times after earthquake and pirate attacks; contains the marble tomb of Juan Ponce de León, the first European Governor of Puerto Rico, explorer of Florida and seeker of the Fountain of Youth).
🎫 Book tickets via GetYourGuidePuerto Rico has three of the world's five bioluminescent bays — the finest accessible one for San Juan visitors is Laguna Grande (Fajardo, 65 km east of San Juan, the most visited; the other is Mosquito Bay on Vieques, the world's brightest bioluminescent bay; and the third is La Parguera in Lajas). Laguna Grande bioluminescence: the Pyrodinium bahamense dinoflagellate (bioluminescent plankton) in concentrations of 700,000 organisms per litre produces a flash of blue-green light with every movement through the water — kayaking or swimming in the bay creates trails of glowing water in total darkness that illuminate the body outline; the conditions require calm, dark, cloudy nights for maximum brightness.
🎫 Book tickets via GetYourGuideVieques (the island municipality 12 km east of the Puerto Rico mainland, accessible by ferry 45 min from Ceiba or 30-min flight from San Juan; formerly a US Navy base until 2003; now two-thirds National Wildlife Refuge — the Vieques National Wildlife Refuge protects the former bombing range and the beaches; the wild horses of Vieques (paso fino horses gone feral during the Navy occupation — hundreds roam the island freely) and the Mosquito Bay (also called Puerto Mosquito or Bioluminescent Bay — Guinness World Records certified as the world's brightest bioluminescent bay: 700,000 dinoflagellates per litre vs. 30,000 in most bioluminescent bays).
🎫 Book tickets via GetYourGuideCasa Bacardí (the Bacardí distillery in Cataño, across San Juan Bay from Old San Juan — accessible by the Cataño ferry, a 10-minute ride through the bay; Bacardí moved its operations to Puerto Rico after Fidel Castro's 1960 nationalisation of the Bacardí assets in Cuba; the distillery now produces 100,000 cases per day of rum; the tour visits the heritage museum, the blending laboratory, the barrel room (10,000 barrels of ageing rum), and the tasting room where 4 varieties are sampled; the Cuban heritage of the Bacardí family — founders Don Facundo Bacardí Massó and his wife Doña Amalia — is extensively documented).
🎫 Book tickets via GetYourGuideSanturce (the urban neighbourhood adjacent to Condado) has become the arts and cultural capital of Puerto Rico — the Santurce es Ley street art festival (annually since 2011) has transformed the neighbourhood into an open-air mural museum with work by Puerto Rican and international artists; the Museo de Arte de Puerto Rico (the finest art museum on the island, in a 1920 neoclassical hospital building with a spectacular glass atrium addition); and La Placita de Santurce (the neighbourhood market that transforms Thursday-Saturday evenings into the most vibrant outdoor party in San Juan, with salsa, reggaeton, piña coladas and the entire San Juan social spectrum in the streets around the market square).
Calle Loíza (the bohemian street connecting Santurce to Condado, lined with independent restaurants, vintage shops, artisan coffee and the Loíza Street Festival in summer) and the farewell Puerto Rican evening — the bomba y plena (the Afro-Puerto Rican musical tradition: bomba is a call-and-response percussive dance tradition brought from West Africa by enslaved people; plena is the Puerto Rican "sung newspaper" — commentary on current events set to song; both traditions survive in their purest form in the Loíza municipality east of San Juan, the centre of Afro-Puerto Rican culture) performed live at the La Olla de Barro or the Nuyorican Café in Old San Juan.