Carpenter's Mill, Ohio

Perkins Observatory is an astronomical observatory in Delaware, Ohio. It is owned and operated by Ohio Wesleyan University. In 1931 it had the third largest telescope in the World; the 69 inch aperture Perkins telescope came online at this observatory. The mirror was the largest cast in the United States up to that time, and it was made by the United States National Bureau of Standards.In the 1930s this observatory also started periodic document release called The Telescope, featuring results from the telescope but grew to include other astronomical information.The University partnered with Ohio State University in 1935, to help run the big telescope and the agreement lasted for almost seven decades. In the 1960s the telescope was moved to Arizona, USA for better viewing conditions, and fitted with new larger mirror. Nevertheless, the Observatory continued to be a hub of astronomical activity in the region and for the University. In the 21st century the Observatory supports various public and academic astronomical activities and is a source for information such as NEO flybys in the community.

The Methodist Theological School in Ohio (MTSO) is a graduate theological school and seminary in Delaware, Ohio. MTSO is one of the 13 official seminaries of The United Methodist Church. MTSO is accredited by the North Central Association of Colleges and Schools of The Higher Learning Commission and is also accredited the Association of Theological Schools in the United States and Canada to provide post-baccalaureate professional and academic degree programs to educate persons for the practice of ministry and for teaching and research in the theological disciplines.In addition to The United Methodist Church, MTSO students represent over a dozen faith traditions.

The Ohio State University Radio Observatory was a Kraus-type (after its inventor John D. Kraus) radio telescope located on the grounds of the Perkins Observatory at Ohio Wesleyan University in Delaware, Ohio from 1963 to 1998. Known as Big Ear, the observatory was part of Ohio State University's Search for Extraterrestrial Intelligence (SETI) project. The telescope was designed by John D. Kraus. Construction of the Big Ear began in 1956 and was completed in 1961, and it was finally turned on for the first time in 1963. The main reflector of Big Ear—The Flat Reflector—measured approximately 103 meters by 33 meters, giving it the sensitivity equivalent to a circular dish measuring nearly 53 meters in diameter.The observatory completed the Ohio Sky Survey in 1971, and from 1973–1995, Big Ear was used to search for extraterrestrial radio signals, making it the longest running SETI project in history. In 1977, the Big Ear received the Wow! signal. The observatory was disassembled in 1998 when developers purchased the site from the university and used the land to expand a nearby golf course.

Stratford is an unincorporated community in Delaware County, in the U.S. state of Ohio.

The Stratford Methodist Episcopal Church is a historic former church building located near the city of Delaware, Ohio, United States. Constructed in the 1840s for workers in a company town, it was home to a congregation of the Methodist Episcopal Church until the community faltered following the company's closure. Situated at the southern end of the company town, it remains prominent because of its architecture, and it has been named a historic site.

Hyatts is an unincorporated community in Delaware County, in the U.S. state of Ohio.

The Olentangy Indian Caverns are a series of caves, natural passages and rooms occupying three different levels. The caverns were formed millions of years ago by an underground river that cut through the limestone rock. They were used by the Wyandotte Indians as a refuge from the weather and from their enemies the Delaware Indians. Artifacts found in the caverns indicate that it was used by the Wyandotte as late as 1810. The Olentangy Indian Caverns are located at 1779 Home Road, Delaware, Ohio and are open seasonally for tours.

The Bharatiya Hindu Temple is a Hindu temple in Powell, Ohio. With approximately 2,000 members as of 2010, it is the largest Hindu temple in the Columbus metropolitan area. According to the Center for Folklore Studies at Ohio State University, "The temple brings new languages, new practices, new ideas, new communities, and even new foods to the Columbus area." Its significance has been recognized with an Ohio Historical Society marker.

Olentangy Liberty High School is a public comprehensive high school located in Powell, Ohio. The school was established in 2003 and is the second of four high schools in the Olentangy Local School District. Olentangy Liberty was rated "Excellent" on the 2013/2014 State of Ohio report card. In 2013, the school received a gold medal ranking as the fifth best high school in the state of Ohio and the 175th best high school in the U.S. by U.S. News & World Report. In 2014, the school was ranked as one of America's most challenging high schools by The Washington Post.

Olentangy High School is a public comprehensive secondary school located in Lewis Center, Ohio, operated by the Olentangy Local School District. In 2007, the school was ranked as the 97th best high school in the U.S. by Newsweek. Then, in 2012 the school was ranked tenth in the state by U.S. News For the school year of 2011-2012 the high school received an "Excellent" on the preliminary state report card.

The Gooding House and Tavern has a long and storied history that begins with its genesis as the home of George B. Gooding, who amassed a large amount of farmland and used his home as a stagecoach stop and tavern during the earliest years of Delaware County's development. Also known as "Halfway House" and the "Gooding Tavern," this property was well situated on what is now U.S. Route 23 previously known as "Mud Pike", about halfway between the town of Worthington, Ohio on the south and the town of Delaware, Ohio on the north. Owned by the Gooding family for 175 years, this farmstead and tavern played an important role in the commercial development of Orange Township and Delaware County during the 19th century and early 20th century. The property demonstrates the broad pattern of Ohio's transportation-related commerce in the early 19th century, when inns and taverns were built to accommodate and sustain the traveler. The Gooding House provides an example of the architectural evolution of a property from Ohio's settlement period, through the more prosperous years of the mid-19th century, to the changes brought by the early 20th century. The building exhibits significant architectural features from each of these three periods: 1820s Federal influences, 1850s early Italianate influences, and 1910s Colonial Revival and Craftsman influences. Each era was important to the architectural evolution of the property as it was occupied by succeeding generations of the Gooding family.

Delaware Municipal Airport "Jim Moore Field" (ICAO: KDLZ, FAA LID: DLZ) is a public airport located three miles (5 km) southwest of downtown Delaware, Ohio, United States. It is owned and operated by the City of Delaware.